Robotic organ and disease improvements (#76766)

## About The Pull Request In the code description for the `ORGAN_ROBOTIC` flag, it says that robotic organs are not supposed to decay or regenerate health. I went and fixed this and added some more "robotic" behavior. New changes for robotic organs: - No longer heal damage passively - No longer gain health from revival - No longer heal in the smart organ fridge - No longer heal from pluoxium - Robotic ears no longer heal from ear healing items (earmuffs, etc.) - Robotic eyes are immune to changeling blind stings - Robotic eyes no longer heal from occuline New changes for diseases: - Some diseases now require an organ to work. A robotic organ will give immunity to the disease symptom unless the disease has "Inorganic Biology". - The transmission methods for diseases require organs to work but robotic organs are immune. (except inorganic biology) Airborne disease transmission require lungs. Ingested (drunk or eaten) disease transmission requires a stomach. Blood (inject or patch) disease transmission requires a heart. - Organs removed from a mob that is afflicted with a disease will be infectious while handling or transplanting it. (again, robotic organs are immune unless inorganic biology is present) Certain admin spawned or special diseases are exempt from this transmission method. - A stomach is required for nebula nausea, gastritium, carpellosis, metabolic boost, vomit, weight loss, death sandwich poisoning, - Lungs are required for choking, asphyxiation, cough, cold9, oxygen restoration, sneezing, flu, cold, spanish flu, tuberculosis - A liver is required for tissue hydration, plasma fixation, parasitic infection - Ears are required for deafness, sensory restoration - A heart is required for toxolysis, heart failure - Eyes are required for sensory restoration, hyphema - A tongue is required for voice change, parrot possession, pierrot throat - Wizarditis no longer requires a head (wtf?) to function ## Why It's Good For The Game Robotic organs should behave as intended. Not naturally healing (like organic organs) was supposed to be their downside to counteract their their ability to not decay upon death. ## Changelog 🆑 fix: Fix robotic organs to not gain health passively, from revival, smart organ fridge, pluxium, occuline, and earmuffs. add: Some diseases now require the appropriate internal organ to work. A robotic organ will give immunity to the disease symptom unless the disease has "Inorganic Biology". add: Disease transmission methods now require an internal organ to be successful. Robotic organs give immunity. (except inorganic biology) Airborne disease transmission require lungs. Ingested (drunk or eaten) disease transmission requires a stomach. Blood (inject or patch) disease transmission requires a heart. add: Organs removed from a mob that is afflicted with a disease will be infectious while handling or transplanting it. (again, robotic organs are immune unless inorganic biology is present) Certain admin spawned or special diseases are exempt from this transmission method. add: A stomach is required for nebula nausea, gastritium, carpellosis, metabolic boost, vomit, weight loss, death sandwich poisoning add: Lungs are required for choking, asphyxiation, cough, cold9, oxygen restoration, sneezing, flu, cold, spanish flu, tuberculosis add: A liver is required for tissue hydration, plasma fixation, parasitic infection add: Ears are required for deafness, sensory restoration add: A heart is required for toxolysis, heart failure add: Eyes are required for sensory restoration, hyphema add: A tongue is required for voice change, pierrot throat bal: Remove head requirement for wizarditis disease /🆑 --------- Co-authored-by: MrMelbert <51863163+MrMelbert@users.noreply.github.com>
2026-08-30 00:29:02 +01:00 · 2023-07-21 11:55:29 +01:00
parent ec3e558204
commit e3d68c0236
41 changed files with 269 additions and 160 deletions
@@ -43,9 +43,19 @@
 			RegisterSignal(parent, COMSIG_PILL_CONSUMED, PROC_REF(try_infect_eat))
 			if(istype(parent, /obj/item/reagent_containers/cup))
 				RegisterSignal(parent, COMSIG_GLASS_DRANK, PROC_REF(try_infect_drink))
+			if(isorgan(parent))
+				RegisterSignal(parent, COMSIG_ORGAN_IMPLANTED, PROC_REF(on_organ_insertion))
 		else if(istype(parent, /obj/effect/decal/cleanable/blood/gibs))
 			RegisterSignal(parent, COMSIG_GIBS_STREAK, PROC_REF(try_infect_streak))

+/datum/component/infective/proc/on_organ_insertion(obj/item/organ/target, mob/living/carbon/receiver)
+	SIGNAL_HANDLER
+
+	for(var/datum/disease/disease in diseases)
+		receiver.ForceContractDisease(disease)
+
+	qdel(src) // once organ is implanted delete the infective component
+
 /datum/component/infective/proc/try_infect_eat(datum/source, mob/living/eater, mob/living/feeder)
 	SIGNAL_HANDLER

@@ -55,19 +65,27 @@
 	if(is_weak && !prob(weak_infection_chance))
 		return

-	for(var/V in diseases)
-		eater.ForceContractDisease(V)
+	for(var/datum/disease/disease in diseases)
+		if(!disease.has_required_infectious_organ(eater, ORGAN_SLOT_STOMACH))
+			continue
+
+		eater.ForceContractDisease(disease)
+
 	try_infect(feeder, BODY_ZONE_L_ARM)

 /datum/component/infective/proc/try_infect_drink(datum/source, mob/living/drinker, mob/living/feeder)
 	SIGNAL_HANDLER

-	for(var/disease in diseases)
-		drinker.ForceContractDisease(disease)
 	var/appendage_zone = feeder.held_items.Find(source)
 	appendage_zone = appendage_zone == 0 ? BODY_ZONE_CHEST : appendage_zone % 2 ? BODY_ZONE_R_ARM : BODY_ZONE_L_ARM
 	try_infect(feeder, appendage_zone)

+	for(var/datum/disease/disease in diseases)
+		if(!disease.has_required_infectious_organ(drinker, ORGAN_SLOT_STOMACH))
+			continue
+
+		drinker.ForceContractDisease(disease)
+
 /datum/component/infective/proc/clean(datum/source, clean_types)
 	SIGNAL_HANDLER

@@ -101,11 +101,15 @@
 	if(((disease.spread_flags & DISEASE_SPREAD_AIRBORNE) || force_spread) && prob((50*disease.spreading_modifier) - 1))
 		ForceContractDisease(disease)

-/mob/living/carbon/AirborneContractDisease(datum/disease/D, force_spread)
+/mob/living/carbon/AirborneContractDisease(datum/disease/disease, force_spread)
 	if(internal)
 		return
 	if(HAS_TRAIT(src, TRAIT_NOBREATH))
 		return
+
+	if(!disease.has_required_infectious_organ(src, ORGAN_SLOT_LUNGS))
+		return
+
 	..()


@@ -122,14 +126,14 @@
 	return TRUE


-/mob/living/carbon/human/CanContractDisease(datum/disease/D)
+/mob/living/carbon/human/CanContractDisease(datum/disease/disease)
 	if(dna)
-		if(HAS_TRAIT(src, TRAIT_VIRUSIMMUNE) && !D.bypasses_immunity)
+		if(HAS_TRAIT(src, TRAIT_VIRUSIMMUNE) && !disease.bypasses_immunity)
+			return FALSE
+	if(disease.required_organ)
+		if(!disease.has_required_infectious_organ(src, disease.required_organ))
 			return FALSE

-	for(var/thing in D.required_organs)
-		if(!((locate(thing) in bodyparts) || (locate(thing) in organs)))
-			return FALSE
 	return ..()

 /mob/living/proc/CanSpreadAirborneDisease()
@@ -30,7 +30,8 @@
 	var/bypasses_immunity = FALSE //Does it skip species virus immunity check? Some things may diseases and not viruses
 	var/spreading_modifier = 1
 	var/severity = DISEASE_SEVERITY_NONTHREAT
-	var/list/required_organs = list()
+	/// If the disease requires an organ for the effects to function, robotic organs are immune to disease unless inorganic biology symptom is present
+	var/required_organ
 	var/needs_all_cures = TRUE
 	var/list/strain_data = list() //dna_spread special bullshit
 	var/infectable_biotypes = MOB_ORGANIC //if the disease can spread on organics, synthetics, or undead
@@ -61,11 +62,14 @@
 	var/turf/source_turf = get_turf(infectee)
 	log_virus("[key_name(infectee)] was infected by virus: [src.admin_details()] at [loc_name(source_turf)]")

-
 ///Proc to process the disease and decide on whether to advance, cure or make the sympthoms appear. Returns a boolean on whether to continue acting on the symptoms or not.
 /datum/disease/proc/stage_act(seconds_per_tick, times_fired)
 	var/slowdown = HAS_TRAIT(affected_mob, TRAIT_VIRUS_RESISTANCE) ? 0.5 : 1 // spaceacillin slows stage speed by 50%

+	if(required_organ)
+		if(!has_required_infectious_organ(affected_mob, required_organ))
+			return FALSE
+
 	if(has_cure())
 		if(disease_flags & CHRONIC && SPT_PROB(cure_chance, seconds_per_tick))
 			update_stage(1)
@@ -149,7 +153,7 @@
 	//note that stage is not copied over - the copy starts over at stage 1
 	var/static/list/copy_vars = list("name", "visibility_flags", "disease_flags", "spread_flags", "form", "desc", "agent", "spread_text",
 									"cure_text", "max_stages", "stage_prob", "viable_mobtypes", "cures", "infectivity", "cure_chance",
-									"bypasses_immunity", "spreading_modifier", "severity", "required_organs", "needs_all_cures", "strain_data",
+									"required_organ", "bypasses_immunity", "spreading_modifier", "severity", "needs_all_cures", "strain_data",
 									"infectable_biotypes", "process_dead")

 	var/datum/disease/D = copy_type ? new copy_type() : new type()
@@ -193,6 +197,21 @@

 	return FALSE

+/// Checks if the mob has the required organ and it's not robotic or affected by inorganic biology
+/datum/disease/proc/has_required_infectious_organ(mob/living/carbon/target, required_organ_slot)
+	if(!iscarbon(target))
+		return FALSE
+
+	var/obj/item/organ/target_organ = target.get_organ_slot(required_organ_slot)
+	if(!istype(target_organ))
+		return FALSE
+
+	// robotic organs are immune to disease unless 'inorganic biology' symptom is present
+	if(IS_ROBOTIC_ORGAN(target_organ) && !(infectable_biotypes & MOB_ROBOTIC))
+		return FALSE
+
+	return TRUE
+
 //Use this to compare severities
 /proc/get_disease_severity_value(severity)
 	switch(severity)
@@ -8,9 +8,9 @@
 	agent = "Carp Ella"
 	cures = list(/datum/reagent/carpet)
 	viable_mobtypes = list(/mob/living/carbon/human)
-	required_organs = list(/obj/item/organ/internal/stomach)
 	spread_flags = DISEASE_SPREAD_NON_CONTAGIOUS
 	severity = DISEASE_SEVERITY_MEDIUM
+	required_organ = ORGAN_SLOT_STOMACH
 	max_stages = 5
 	/// The chance of Carp Ella to spawn on cure
 	var/ella_spawn_chance = 10
@@ -6,10 +6,10 @@
 	agent = "Atmobacter Polyri"
 	cures = list(/datum/reagent/firefighting_foam)
 	viable_mobtypes = list(/mob/living/carbon/human)
-	required_organs = list(/obj/item/organ/internal/stomach)
 	spread_flags = DISEASE_SPREAD_NON_CONTAGIOUS
 	severity = DISEASE_SEVERITY_HARMFUL
 	max_stages = 5
+	required_organ = ORGAN_SLOT_STOMACH
 	/// The chance of burped out tritium to be hot during max stage
 	var/tritium_burp_hot_chance = 10

@@ -6,9 +6,9 @@
 	agent = "Stars"
 	cures = list(/datum/reagent/bluespace)
 	viable_mobtypes = list(/mob/living/carbon/human)
-	required_organs = list(/obj/item/organ/internal/stomach)
 	spread_flags = DISEASE_SPREAD_NON_CONTAGIOUS
 	severity = DISEASE_SEVERITY_MEDIUM
+	required_organ = ORGAN_SLOT_STOMACH
 	max_stages = 5

 /datum/disease/advance/nebula_nausea/New()
@@ -20,6 +20,7 @@
 	base_message_chance = 15
 	symptom_delay_min = 10
 	symptom_delay_max = 30
+	required_organ = ORGAN_SLOT_LUNGS
 	threshold_descs = list(
 		"Stage Speed 8" = "Causes choking more frequently.",
 		"Stealth 4" = "The symptom remains hidden until active."
@@ -35,26 +36,28 @@
 	if(A.totalStealth() >= 4)
 		suppress_warning = TRUE

-/datum/symptom/choking/Activate(datum/disease/advance/A)
+/datum/symptom/choking/Activate(datum/disease/advance/advanced_disease)
 	. = ..()
 	if(!.)
 		return
-	var/mob/living/M = A.affected_mob
-	switch(A.stage)
+
+	var/mob/living/carbon/infected_mob = advanced_disease.affected_mob
+
+	switch(advanced_disease.stage)
 		if(1, 2)
 			if(prob(base_message_chance) && !suppress_warning)
-				to_chat(M, span_warning("[pick("You're having difficulty breathing.", "Your breathing becomes heavy.")]"))
+				to_chat(infected_mob, span_warning("[pick("You're having difficulty breathing.", "Your breathing becomes heavy.")]"))
 		if(3, 4)
 			if(!suppress_warning)
-				to_chat(M, span_warning("[pick("Your windpipe feels like a straw.", "Your breathing becomes tremendously difficult.")]"))
+				to_chat(infected_mob, span_warning("[pick("Your windpipe feels like a straw.", "Your breathing becomes tremendously difficult.")]"))
 			else
-				to_chat(M, span_warning("You feel very [pick("dizzy","woozy","faint")].")) //fake bloodloss messages
-			Choke_stage_3_4(M, A)
-			M.emote("gasp")
+				to_chat(infected_mob, span_warning("You feel very [pick("dizzy","woozy","faint")].")) //fake bloodloss messages
+			Choke_stage_3_4(infected_mob, advanced_disease)
+			infected_mob.emote("gasp")
 		else
-			to_chat(M, span_userdanger("[pick("You're choking!", "You can't breathe!")]"))
-			Choke(M, A)
-			M.emote("gasp")
+			to_chat(infected_mob, span_userdanger("[pick("You're choking!", "You can't breathe!")]"))
+			Choke(infected_mob, advanced_disease)
+			infected_mob.emote("gasp")

 /datum/symptom/choking/proc/Choke_stage_3_4(mob/living/M, datum/disease/advance/A)
 	M.adjustOxyLoss(rand(6,13))
@@ -82,7 +85,6 @@ Bonus
 */

 /datum/symptom/asphyxiation
-
 	name = "Acute respiratory distress syndrome"
 	desc = "The virus causes shrinking of the host's lungs, causing severe asphyxiation. May also lead to heart attacks."
 	illness = "Iron Lungs"
@@ -95,11 +97,12 @@ Bonus
 	base_message_chance = 15
 	symptom_delay_min = 14
 	symptom_delay_max = 30
-	var/paralysis = FALSE
+	required_organ = ORGAN_SLOT_LUNGS
 	threshold_descs = list(
 		"Stage Speed 8" = "Additionally synthesizes pancuronium and sodium thiopental inside the host.",
 		"Transmission 8" = "Doubles the damage caused by the symptom."
 	)
+	var/paralysis = FALSE


 /datum/symptom/asphyxiation/Start(datum/disease/advance/A)
@@ -19,7 +19,7 @@
 	base_message_chance = 15
 	symptom_delay_min = 2
 	symptom_delay_max = 15
-	var/spread_range = 1
+	required_organ = ORGAN_SLOT_LUNGS
 	threshold_descs = list(
 		"Resistance 11" = "The host will drop small items when coughing.",
 		"Resistance 15" = "Occasionally causes coughing fits that stun the host. The extra coughs do not spread the virus.",
@@ -31,6 +31,7 @@
 	COOLDOWN_DECLARE(cough_cooldown)
 	///if FALSE, there is a percentage chance that the mob will emote coughing while cough_cooldown is on cooldown. If TRUE, won't emote again until after the off cooldown cough occurs.
 	var/off_cooldown_coughed = FALSE
+	var/spread_range = 1

 /datum/symptom/cough/Start(datum/disease/advance/active_disease)
 	. = ..()
@@ -19,6 +19,7 @@
 	base_message_chance = 100
 	symptom_delay_min = 25
 	symptom_delay_max = 80
+	required_organ = ORGAN_SLOT_EARS
 	threshold_descs = list(
 		"Resistance 9" = "Causes permanent deafness, instead of intermittent.",
 		"Stealth 4" = "The symptom remains hidden until active.",
@@ -38,15 +39,15 @@
 	REMOVE_TRAIT(advanced_disease.affected_mob, TRAIT_DEAF, DISEASE_TRAIT)
 	return ..()

-/datum/symptom/deafness/Activate(datum/disease/advance/A)
+/datum/symptom/deafness/Activate(datum/disease/advance/advanced_disease)
 	. = ..()
 	if(!.)
 		return
-	var/mob/living/carbon/infected_mob = A.affected_mob
+
+	var/mob/living/carbon/infected_mob = advanced_disease.affected_mob
 	var/obj/item/organ/internal/ears/ears = infected_mob.get_organ_slot(ORGAN_SLOT_EARS)
-	if(!ears)
-		return //cutting off your ears to cure the deafness: the ultimate own
-	switch(A.stage)
+
+	switch(advanced_disease.stage)
 		if(3, 4)
 			if(prob(base_message_chance) && !suppress_warning)
 				to_chat(infected_mob, span_warning("[pick("You hear a ringing in your ear.", "Your ears pop.")]"))
@@ -8,7 +8,6 @@
 */

 /datum/symptom/dizzy // Not the egg
-
 	name = "Dizziness"
 	desc = "The virus causes inflammation of the vestibular system, leading to bouts of dizziness."
 	illness = "Motion Sickness"
@@ -11,7 +11,6 @@
 	symptom_delay_max = 1
 	var/passive_message = "" //random message to infected but not actively healing people

-
 /datum/symptom/heal/Activate(datum/disease/advance/A)
 	. = ..()
 	if(!.)
@@ -181,17 +180,18 @@
 */
 /datum/symptom/heal/chem
 	name = "Toxolysis"
+	desc = "The virus rapidly breaks down any foreign chemicals in the bloodstream."
 	stealth = 0
 	resistance = -2
 	stage_speed = 2
 	transmittable = -2
 	level = 7
-	var/food_conversion = FALSE
-	desc = "The virus rapidly breaks down any foreign chemicals in the bloodstream."
+	required_organ = ORGAN_SLOT_HEART
 	threshold_descs = list(
 		"Resistance 7" = "Increases chem removal speed.",
 		"Stage Speed 6" = "Consumed chemicals nourish the host.",
 	)
+	var/food_conversion = FALSE

 /datum/symptom/heal/chem/Start(datum/disease/advance/A)
 	. = ..()
@@ -222,19 +222,20 @@
 */
 /datum/symptom/heal/metabolism
 	name = "Metabolic Boost"
+	desc = "The virus causes the host's metabolism to accelerate rapidly, making them process chemicals twice as fast,\
+		but also causing increased hunger."
 	stealth = -1
 	resistance = -2
 	stage_speed = 2
 	transmittable = 1
 	level = 7
-	var/triple_metabolism = FALSE
-	var/reduced_hunger = FALSE
-	desc = "The virus causes the host's metabolism to accelerate rapidly, making them process chemicals twice as fast,\
-		but also causing increased hunger."
+	required_organ = ORGAN_SLOT_STOMACH
 	threshold_descs = list(
 		"Stealth 3" = "Reduces hunger rate.",
 		"Stage Speed 10" = "Chemical metabolization is tripled instead of doubled.",
 	)
+	var/triple_metabolism = FALSE
+	var/reduced_hunger = FALSE

 /datum/symptom/heal/metabolism/Start(datum/disease/advance/A)
 	. = ..()
@@ -245,17 +246,16 @@
 	if(A.totalStealth() >= 3)
 		reduced_hunger = TRUE

-/datum/symptom/heal/metabolism/Heal(mob/living/carbon/C, datum/disease/advance/A, actual_power)
-	if(!istype(C))
-		return
+/datum/symptom/heal/metabolism/Heal(mob/living/carbon/infected_mob, datum/disease/advance/A, actual_power)
 	var/metabolic_boost = triple_metabolism ? 2 : 1
-	C.reagents.metabolize(C, metabolic_boost * SSMOBS_DT, 0, can_overdose=TRUE) //this works even without a liver; it's intentional since the virus is metabolizing by itself
-	C.overeatduration = max(C.overeatduration - 4 SECONDS, 0)
+	infected_mob.reagents.metabolize(infected_mob, metabolic_boost * SSMOBS_DT, 0, can_overdose=TRUE) //this works even without a liver; it's intentional since the virus is metabolizing by itself
+	infected_mob.overeatduration = max(infected_mob.overeatduration - 4 SECONDS, 0)
 	var/lost_nutrition = 9 - (reduced_hunger * 5)
-	C.adjust_nutrition(-lost_nutrition * HUNGER_FACTOR) //Hunger depletes at 10x the normal speed
+	infected_mob.adjust_nutrition(-lost_nutrition * HUNGER_FACTOR) //Hunger depletes at 10x the normal speed
 	if(prob(2))
-		to_chat(C, span_notice("You feel an odd gurgle in your stomach, as if it was working much faster than normal."))
-	return 1
+		to_chat(infected_mob, span_notice("You feel an odd gurgle in your stomach, as if it was working much faster than normal."))
+	return TRUE
+
 /*Nocturnal Regeneration
 * Increases stealth
 * Slightly reduces resistance
@@ -312,6 +312,7 @@
 	if(M.getBruteLoss() || M.getFireLoss())
 		return TRUE
 	return FALSE
+
 /*Regen Coma
 * No effect on stealth
 * Increases resistance
@@ -427,11 +428,12 @@
 	transmittable = 1
 	level = 6
 	passive_message = span_notice("Your skin feels oddly dry...")
-	var/absorption_coeff = 1
+	required_organ = ORGAN_SLOT_LIVER
 	threshold_descs = list(
 		"Resistance 5" = "Water is consumed at a much slower rate.",
 		"Stage Speed 7" = "Increases healing speed.",
 	)
+	var/absorption_coeff = 1

 /datum/symptom/heal/water/Start(datum/disease/advance/A)
 	. = ..()
@@ -442,17 +444,18 @@
 	if(A.totalResistance() >= 5)
 		absorption_coeff = 0.25

-/datum/symptom/heal/water/CanHeal(datum/disease/advance/A)
+/datum/symptom/heal/water/CanHeal(datum/disease/advance/advanced_disease)
 	. = 0
-	var/mob/living/M = A.affected_mob
-	if(M.fire_stacks < 0)
-		M.adjust_fire_stacks(min(absorption_coeff, -M.fire_stacks))
+	var/mob/living/carbon/infected_mob = advanced_disease.affected_mob
+
+	if(infected_mob.fire_stacks < 0)
+		infected_mob.adjust_fire_stacks(min(absorption_coeff, -infected_mob.fire_stacks))
 		. += power
-	if(M.reagents.has_reagent(/datum/reagent/water/holywater, needs_metabolizing = FALSE))
-		M.reagents.remove_reagent(/datum/reagent/water/holywater, 0.5 * absorption_coeff)
+	if(infected_mob.reagents.has_reagent(/datum/reagent/water/holywater, needs_metabolizing = FALSE))
+		infected_mob.reagents.remove_reagent(/datum/reagent/water/holywater, 0.5 * absorption_coeff)
 		. += power * 0.75
-	else if(M.reagents.has_reagent(/datum/reagent/water, needs_metabolizing = FALSE))
-		M.reagents.remove_reagent(/datum/reagent/water, 0.5 * absorption_coeff)
+	else if(infected_mob.reagents.has_reagent(/datum/reagent/water, needs_metabolizing = FALSE))
+		infected_mob.reagents.remove_reagent(/datum/reagent/water, 0.5 * absorption_coeff)
 		. += power * 0.5

 /datum/symptom/heal/water/Heal(mob/living/carbon/M, datum/disease/advance/A, actual_power)
@@ -472,9 +475,10 @@

 	return 1

-/datum/symptom/heal/water/passive_message_condition(mob/living/M)
-	if(M.getBruteLoss() || M.getFireLoss())
+/datum/symptom/heal/water/passive_message_condition(mob/living/carbon/infected_mob)
+	if(infected_mob.getBruteLoss() || infected_mob.getFireLoss())
 		return TRUE
+
 	return FALSE

 /// Determines the rate at which Plasma Fixation heals based on the amount of plasma in the air
@@ -499,11 +503,12 @@
 	transmittable = -2
 	level = 8
 	passive_message = span_notice("You feel an odd attraction to plasma.")
-	var/temp_rate = 1
+	required_organ = ORGAN_SLOT_LIVER
 	threshold_descs = list(
 		"Transmission 6" = "Increases temperature adjustment rate.",
 		"Stage Speed 7" = "Increases healing speed.",
 	)
+	var/temp_rate = 1

 /datum/symptom/heal/plasma/Start(datum/disease/advance/A)
 	. = ..()
@@ -535,7 +540,7 @@

 // Check internals breath, environmental plasma, and plasma in bloodstream to determine the heal power
 /datum/symptom/heal/plasma/CanHeal(datum/disease/advance/advanced_disease)
-	var/mob/living/diseased_mob = advanced_disease.affected_mob
+	var/mob/living/carbon/infected_mob = advanced_disease.affected_mob
 	var/datum/gas_mixture/environment
 	var/list/gases

@@ -545,24 +550,23 @@
 	///  the amount of mols in a breath is significantly lower than in the environment so we are just going to use the tank's
 	///  distribution pressure as an abstraction rather than calculate it using the ideal gas equation.
 	///  balanced around a tank set to 4kpa = about 0.2 healing power. maxes out at 0.75 healing power, or 15kpa.
-	if(iscarbon(diseased_mob))
-		var/mob/living/carbon/breather = diseased_mob
-		var/obj/item/tank/internals/internals_tank = breather.internal
-		if(internals_tank)
-			var/datum/gas_mixture/tank_contents = internals_tank.return_air()
-			if(tank_contents && round(tank_contents.return_pressure())) // make sure the tank is not empty or 0 pressure
-				if(tank_contents.gases[/datum/gas/plasma])
-					// higher tank distribution pressure leads to more healing, but once you get to about 15kpa you reach the max
-					. += power * min(MAX_HEAL_COEFFICIENT_INTERNALS, internals_tank.distribute_pressure * HEALING_PER_BREATH_PRESSURE)
-	// Check environment
-	if(diseased_mob.loc)
-		environment = diseased_mob.loc.return_air()
-	if(environment)
-		gases = environment.gases
-		if(gases[/datum/gas/plasma])
-			. += power * min(MAX_HEAL_COEFFICIENT_INTERNALS, gases[/datum/gas/plasma][MOLES] * HEALING_PER_MOL)
+	var/obj/item/tank/internals/internals_tank = infected_mob.internal
+	if(internals_tank)
+		var/datum/gas_mixture/tank_contents = internals_tank.return_air()
+		if(tank_contents && round(tank_contents.return_pressure())) // make sure the tank is not empty or 0 pressure
+			if(tank_contents.gases[/datum/gas/plasma])
+				// higher tank distribution pressure leads to more healing, but once you get to about 15kpa you reach the max
+				. += power * min(MAX_HEAL_COEFFICIENT_INTERNALS, internals_tank.distribute_pressure * HEALING_PER_BREATH_PRESSURE)
+	else // Check environment
+		if(infected_mob.loc)
+			environment = infected_mob.loc.return_air()
+		if(environment)
+			gases = environment.gases
+			if(gases[/datum/gas/plasma])
+				. += power * min(MAX_HEAL_COEFFICIENT_INTERNALS, gases[/datum/gas/plasma][MOLES] * HEALING_PER_MOL)
+
 	// Check for reagents in bloodstream
-	if(diseased_mob.reagents.has_reagent(/datum/reagent/toxin/plasma, needs_metabolizing = TRUE))
+	if(infected_mob.reagents.has_reagent(/datum/reagent/toxin/plasma, needs_metabolizing = TRUE))
 		. += power * MAX_HEAL_COEFFICIENT_BLOODSTREAM //Determines how much the symptom heals if injected or ingested

 /datum/symptom/heal/plasma/Heal(mob/living/carbon/M, datum/disease/advance/A, actual_power)
@@ -17,10 +17,11 @@
 	base_message_chance = 5
 	symptom_delay_min = 1
 	symptom_delay_max = 1
-	var/regenerate_blood = FALSE
+	required_organ = ORGAN_SLOT_LUNGS
 	threshold_descs = list(
 		"Resistance 8" = "Additionally regenerates lost blood."
 	)
+	var/regenerate_blood = FALSE

 /datum/symptom/oxygen/Start(datum/disease/advance/A)
 	. = ..()
@@ -29,20 +30,21 @@
 	if(A.totalResistance() >= 8) //blood regeneration
 		regenerate_blood = TRUE

-/datum/symptom/oxygen/Activate(datum/disease/advance/A)
+/datum/symptom/oxygen/Activate(datum/disease/advance/advanced_disease)
 	. = ..()
 	if(!.)
 		return
-	var/mob/living/carbon/M = A.affected_mob
-	switch(A.stage)
+
+	var/mob/living/carbon/infected_mob = advanced_disease.affected_mob
+	switch(advanced_disease.stage)
 		if(4, 5)
-			M.adjustOxyLoss(-7, 0)
-			M.losebreath = max(0, M.losebreath - 4)
-			if(regenerate_blood && M.blood_volume < BLOOD_VOLUME_NORMAL)
-				M.blood_volume += 1
+			infected_mob.adjustOxyLoss(-7, 0)
+			infected_mob.losebreath = max(0, infected_mob.losebreath - 4)
+			if(regenerate_blood && infected_mob.blood_volume < BLOOD_VOLUME_NORMAL)
+				infected_mob.blood_volume += 1
 		else
 			if(prob(base_message_chance))
-				to_chat(M, span_notice("[pick("Your lungs feel great.", "You realize you haven't been breathing.", "You don't feel the need to breathe.")]"))
+				to_chat(infected_mob, span_notice("[pick("Your lungs feel great.", "You realize you haven't been breathing.", "You don't feel the need to breathe.")]"))
 	return

 /datum/symptom/oxygen/on_stage_change(datum/disease/advance/A)
@@ -87,34 +87,34 @@
 	symptom_delay_min = 1
 	symptom_delay_max = 1

-/datum/symptom/sensory_restoration/Activate(datum/disease/advance/source_disease)
+/datum/symptom/sensory_restoration/Activate(datum/disease/advance/advanced_disease)
 	. = ..()
 	if(!.)
 		return
-	var/mob/living/carbon/ill_mob = source_disease.affected_mob
-	switch(source_disease.stage)
+	var/mob/living/carbon/infected_mob = advanced_disease.affected_mob
+	switch(advanced_disease.stage)
 		if(4, 5)
-			var/obj/item/organ/internal/ears/ears = ill_mob.get_organ_slot(ORGAN_SLOT_EARS)
-			if(ears)
+			if(advanced_disease.has_required_infectious_organ(infected_mob, ORGAN_SLOT_EARS))
+				var/obj/item/organ/internal/ears/ears = infected_mob.get_organ_slot(ORGAN_SLOT_EARS)
 				ears.adjustEarDamage(-4, -4)

-			ill_mob.adjust_temp_blindness(-4 SECONDS)
-			ill_mob.adjust_eye_blur(-4 SECONDS)
-
-			var/obj/item/organ/internal/eyes/eyes = ill_mob.get_organ_slot(ORGAN_SLOT_EYES)
-			if(!eyes) // only dealing with eye stuff from here on out
+			if(!advanced_disease.has_required_infectious_organ(infected_mob, ORGAN_SLOT_EYES))
 				return

+			var/obj/item/organ/internal/eyes/eyes = infected_mob.get_organ_slot(ORGAN_SLOT_EYES)
+			infected_mob.adjust_temp_blindness(-4 SECONDS)
+			infected_mob.adjust_eye_blur(-4 SECONDS)
+
 			eyes.apply_organ_damage(-2)
 			if(prob(20))
-				if(ill_mob.is_blind_from(EYE_DAMAGE))
-					to_chat(ill_mob, span_warning("Your vision slowly returns..."))
-					ill_mob.adjust_eye_blur(20 SECONDS)
+				if(infected_mob.is_blind_from(EYE_DAMAGE))
+					to_chat(infected_mob, span_warning("Your vision slowly returns..."))
+					infected_mob.adjust_eye_blur(20 SECONDS)

-				else if(ill_mob.is_nearsighted_from(EYE_DAMAGE))
-					to_chat(ill_mob, span_warning("The blackness in your peripheral vision begins to fade."))
-					ill_mob.adjust_eye_blur(5 SECONDS)
+				else if(infected_mob.is_nearsighted_from(EYE_DAMAGE))
+					to_chat(infected_mob, span_warning("The blackness in your peripheral vision begins to fade."))
+					infected_mob.adjust_eye_blur(5 SECONDS)

 		else
 			if(prob(base_message_chance))
-				to_chat(ill_mob, span_notice("[pick("Your eyes feel great.","You feel like your eyes can focus more clearly.", "You don't feel the need to blink.","Your ears feel great.","Your hearing feels more acute.")]"))
+				to_chat(infected_mob, span_notice("[pick("Your eyes feel great.","You feel like your eyes can focus more clearly.", "You don't feel the need to blink.","Your ears feel great.","Your hearing feels more acute.")]"))
@@ -18,8 +18,7 @@
 	severity = 1
 	symptom_delay_min = 5
 	symptom_delay_max = 35
-	var/spread_range = 4
-	var/cartoon_sneezing = FALSE //ah, ah, AH, AH-CHOO!!
+	required_organ = ORGAN_SLOT_LUNGS
 	threshold_descs = list(
 		"Transmission 9" = "Increases sneezing range, spreading the virus over 6 meter cone instead of over a 4 meter cone.",
 		"Stealth 4" = "The symptom remains hidden until active.",
@@ -27,6 +26,8 @@
 	)
 	///Emote cooldowns
 	COOLDOWN_DECLARE(sneeze_cooldown)
+	var/spread_range = 4
+	var/cartoon_sneezing = FALSE //ah, ah, AH, AH-CHOO!!
 	///if FALSE, there is a percentage chance that the mob will emote sneezing while sneeze_cooldown is on cooldown. If TRUE, won't emote again until after the off cooldown sneeze occurs.
 	var/off_cooldown_sneezed = FALSE

@@ -37,6 +37,8 @@
 	var/list/thresholds
 	///If this symptom can appear from /datum/disease/advance/GenerateSymptoms()
 	var/naturally_occuring = TRUE
+	///If the symptom requires an organ for the effects to function, robotic organs are immune to disease unless inorganic biology symptom is present
+	var/required_organ

 /datum/symptom/New()
 	var/list/S = SSdisease.list_symptoms
@@ -58,9 +60,13 @@
 		return FALSE
 	return TRUE

-/datum/symptom/proc/Activate(datum/disease/advance/A)
+/datum/symptom/proc/Activate(datum/disease/advance/advanced_disease)
 	if(neutered)
 		return FALSE
+	if(required_organ)
+		if(!advanced_disease.has_required_infectious_organ(advanced_disease.affected_mob, required_organ))
+			return FALSE
+
 	if(world.time < next_activation)
 		return FALSE
 	else
@@ -19,11 +19,11 @@
 	base_message_chance = 50
 	symptom_delay_min = 25
 	symptom_delay_max = 80
+	required_organ = ORGAN_SLOT_EYES
 	threshold_descs = list(
 		"Resistance 12" = "Weakens extraocular muscles, eventually leading to complete detachment of the eyes.",
 		"Stealth 4" = "The symptom remains hidden until active.",
 	)
-
 	/// At max stage: If FALSE, cause blindness. If TRUE, cause their eyes to fall out.
 	var/remove_eyes = FALSE

@@ -40,41 +40,40 @@
 	. = ..()
 	if(!.)
 		return
-	var/mob/living/carbon/ill_mob = source_disease.affected_mob
-	var/obj/item/organ/internal/eyes/eyes = ill_mob.get_organ_slot(ORGAN_SLOT_EYES)
-	if(!eyes)
-		return // can't do much
+
+	var/mob/living/carbon/infected_mob = source_disease.affected_mob
+	var/obj/item/organ/internal/eyes/eyes = infected_mob.get_organ_slot(ORGAN_SLOT_EYES)

 	switch(source_disease.stage)
 		if(1, 2)
 			if(prob(base_message_chance) && !suppress_warning)
-				to_chat(ill_mob, span_warning("Your eyes itch."))
+				to_chat(infected_mob, span_warning("Your eyes itch."))

 		if(3, 4)
-			to_chat(ill_mob, span_boldwarning("Your eyes burn!"))
-			ill_mob.set_eye_blur_if_lower(20 SECONDS)
+			to_chat(infected_mob, span_boldwarning("Your eyes burn!"))
+			infected_mob.set_eye_blur_if_lower(20 SECONDS)
 			eyes.apply_organ_damage(1)

 		else
-			ill_mob.set_eye_blur_if_lower(40 SECONDS)
+			infected_mob.set_eye_blur_if_lower(40 SECONDS)
 			eyes.apply_organ_damage(5)

 			// Applies nearsighted at minimum
-			if(!ill_mob.is_nearsighted_from(EYE_DAMAGE) && eyes.damage <= eyes.low_threshold)
+			if(!infected_mob.is_nearsighted_from(EYE_DAMAGE) && eyes.damage <= eyes.low_threshold)
 				eyes.set_organ_damage(eyes.low_threshold)

 			if(prob(eyes.damage - eyes.low_threshold + 1))
 				if(remove_eyes)
-					ill_mob.visible_message(
-						span_warning("[ill_mob]'s eyes fall out of their sockets!"),
+					infected_mob.visible_message(
+						span_warning("[infected_mob]'s eyes fall out of their sockets!"),
 						span_userdanger("Your eyes fall out of their sockets!"),
 					)
-					eyes.Remove(ill_mob)
-					eyes.forceMove(get_turf(ill_mob))
+					eyes.Remove(infected_mob)
+					eyes.forceMove(get_turf(infected_mob))

-				else if(!ill_mob.is_blind_from(EYE_DAMAGE))
-					to_chat(ill_mob, span_userdanger("You go blind!"))
+				else if(!infected_mob.is_blind_from(EYE_DAMAGE))
+					to_chat(infected_mob, span_userdanger("You go blind!"))
 					eyes.apply_organ_damage(eyes.maxHealth)

 			else
-				to_chat(ill_mob, span_userdanger("Your eyes burn horrifically!"))
+				to_chat(infected_mob, span_userdanger("Your eyes burn horrifically!"))
@@ -20,13 +20,14 @@
 	base_message_chance = 100
 	symptom_delay_min = 60
 	symptom_delay_max = 120
-	var/scramble_language = FALSE
-	var/datum/language/current_language
+	required_organ = ORGAN_SLOT_TONGUE
 	threshold_descs = list(
 		"Transmission 14" = "The host's language center of the brain is damaged, leading to complete inability to speak or understand any language.",
 		"Stage Speed 7" = "Changes voice more often.",
 		"Stealth 3" = "The symptom remains hidden until active."
 	)
+	var/scramble_language = FALSE
+	var/datum/language/current_language

 /datum/symptom/voice_change/Start(datum/disease/advance/A)
 	. = ..()
@@ -20,14 +20,15 @@ and your disease can spread via people walking on vomit.
 	base_message_chance = 100
 	symptom_delay_min = 25
 	symptom_delay_max = 80
-	var/vomit_nebula = FALSE
-	var/vomit_blood = FALSE
-	var/proj_vomit = 0
+	required_organ = ORGAN_SLOT_STOMACH
 	threshold_descs = list(
 		"Resistance 7" = "Host will vomit blood, causing internal damage.",
 		"Transmission 7" = "Host will projectile vomit, increasing vomiting range.",
 		"Stealth 4" = "The symptom remains hidden until active."
 	)
+	var/vomit_nebula = FALSE
+	var/vomit_blood = FALSE
+	var/proj_vomit = 0

 /datum/symptom/vomit/Start(datum/disease/advance/A)
 	. = ..()
@@ -18,6 +18,7 @@
 	base_message_chance = 100
 	symptom_delay_min = 15
 	symptom_delay_max = 45
+	required_organ = ORGAN_SLOT_STOMACH
 	threshold_descs = list(
 		"Stealth 4" = "The symptom is less noticeable."
 	)
@@ -9,10 +9,9 @@
 	viable_mobtypes = list(/mob/living/carbon/human)
 	cure_chance = 7.5 //higher chance to cure, since two reagents are required
 	desc = "This disease destroys the braincells, causing brain fever, brain necrosis and general intoxication."
-	required_organs = list(/obj/item/organ/internal/brain)
+	required_organ = ORGAN_SLOT_BRAIN
 	severity = DISEASE_SEVERITY_HARMFUL

-
 /datum/disease/brainrot/stage_act(seconds_per_tick, times_fired) //Removed toxloss because damaging diseases are pretty horrible. Last round it killed the entire station because the cure didn't work -- Urist -ACTUALLY Removed rather than commented out, I don't see it returning - RR
 	. = ..()
 	if(!.)
@@ -9,6 +9,7 @@
 	spreading_modifier = 0.5
 	spread_text = "Airborne"
 	severity = DISEASE_SEVERITY_NONTHREAT
+	required_organ = ORGAN_SLOT_LUNGS


 /datum/disease/cold/stage_act(seconds_per_tick, times_fired)
@@ -9,7 +9,7 @@
 	viable_mobtypes = list(/mob/living/carbon/human)
 	desc = "If left untreated the subject will slow, as if partly frozen."
 	severity = DISEASE_SEVERITY_HARMFUL
-
+	required_organ = ORGAN_SLOT_LUNGS

 /datum/disease/cold9/stage_act(seconds_per_tick, times_fired)
 	. = ..()
@@ -14,7 +14,7 @@
 	spread_flags = DISEASE_SPREAD_SPECIAL
 	visibility_flags = HIDDEN_SCANNER
 	bypasses_immunity = TRUE
-
+	required_organ = ORGAN_SLOT_STOMACH

 /datum/disease/death_sandwich_poisoning/stage_act(seconds_per_tick, times_fired)
 	. = ..()
@@ -10,7 +10,7 @@
 	spreading_modifier = 0.75
 	desc = "If left untreated the subject will feel quite unwell."
 	severity = DISEASE_SEVERITY_MINOR
-
+	required_organ = ORGAN_SLOT_LUNGS

 /datum/disease/flu/stage_act(seconds_per_tick, times_fired)
 	. = ..()
@@ -10,7 +10,7 @@
 	spreading_modifier = 0.75
 	desc = "If left untreated the subject will burn to death for being a heretic."
 	severity = DISEASE_SEVERITY_DANGEROUS
-
+	required_organ = ORGAN_SLOT_LUNGS

 /datum/disease/fluspanish/stage_act(seconds_per_tick, times_fired)
 	. = ..()
@@ -13,7 +13,7 @@
 	spread_flags = DISEASE_SPREAD_NON_CONTAGIOUS
 	spread_text = "Organ failure"
 	visibility_flags = HIDDEN_PANDEMIC
-	required_organs = list(/obj/item/organ/internal/heart)
+	required_organ = ORGAN_SLOT_HEART
 	bypasses_immunity = TRUE // Immunity is based on not having an appendix; this isn't a virus
 	var/sound = FALSE

@@ -11,10 +11,9 @@
 	severity = DISEASE_SEVERITY_HARMFUL
 	disease_flags = CAN_CARRY|CAN_RESIST
 	spread_flags = DISEASE_SPREAD_NON_CONTAGIOUS
-	required_organs = list(/obj/item/organ/internal/liver)
+	required_organ = ORGAN_SLOT_LIVER
 	bypasses_immunity = TRUE

-
 /datum/disease/parasite/stage_act(seconds_per_tick, times_fired)
 	. = ..()
 	if(!.)
@@ -10,7 +10,7 @@
 	spreading_modifier = 0.75
 	desc = "If left untreated the subject will probably drive others to insanity."
 	severity = DISEASE_SEVERITY_MEDIUM
-
+	required_organ = ORGAN_SLOT_TONGUE

 /datum/disease/pierrot_throat/stage_act(seconds_per_tick, times_fired)
 	. = ..()
@@ -9,7 +9,7 @@
 	viable_mobtypes = list(/mob/living/carbon/human)
 	cure_chance = 2.5 //like hell are you getting out of hell
 	desc = "A rare highly transmissible virulent virus. Few samples exist, rumoured to be carefully grown and cultured by clandestine bio-weapon specialists. Causes fever, blood vomiting, lung damage, weight loss, and fatigue."
-	required_organs = list(/obj/item/organ/internal/lungs)
+	required_organ = ORGAN_SLOT_LUNGS
 	severity = DISEASE_SEVERITY_BIOHAZARD
 	bypasses_immunity = TRUE // TB primarily impacts the lungs; it's also bacterial or fungal in nature; viral immunity should do nothing.

@@ -16,7 +16,6 @@
 		A gulp of strong, manly spirits usually reverts them to normal, humanlike, condition. \
 		A form of magical grounding can help, too, but will not cure it on its own."
 	severity = DISEASE_SEVERITY_HARMFUL
-	required_organs = list(/obj/item/bodypart/head)

 	/// List of random non-targeted spells to pick from to cast
 	var/list/datum/action/cooldown/spell/random_spells = list()
@@ -27,7 +27,7 @@
 	for(var/i in user_by_item)
 		var/mob/living/carbon/user = user_by_item[i]
 		var/obj/item/organ/internal/ears/ears = user.get_organ_slot(ORGAN_SLOT_EARS)
-		if(!ears || !ears.damage || ears.organ_flags & ORGAN_FAILING)
+		if(!ears || !ears.damage || (ears.organ_flags & ORGAN_FAILING) || IS_ROBOTIC_ORGAN(ears))
 			continue
 		ears.deaf = max(ears.deaf - 0.25 * seconds_per_tick, (ears.damage < ears.maxHealth ? 0 : 1)) // Do not clear deafness if our ears are too damaged
 		ears.apply_organ_damage(-0.025 * seconds_per_tick)
@@ -195,7 +195,7 @@
 /datum/action/changeling/sting/blind
 	name = "Blind Sting"
 	desc = "We temporarily blind our victim. Costs 25 chemicals."
-	helptext = "This sting completely blinds a target for a short time, and leaves them with blurred vision for a long time."
+	helptext = "This sting completely blinds a target for a short time, and leaves them with blurred vision for a long time. Does not work if target has robotic or missing eyes."
 	button_icon_state = "sting_blind"
 	chemical_cost = 25
 	dna_cost = 1
@@ -206,6 +206,10 @@
 		user.balloon_alert(user, "no eyes!")
 		return FALSE

+	if(IS_ROBOTIC_ORGAN(eyes))
+		user.balloon_alert(user, "robotic eyes!")
+		return FALSE
+
 	log_combat(user, target, "stung", "blind sting")
 	to_chat(target, span_danger("Your eyes burn horrifically!"))
 	eyes.apply_organ_damage(eyes.maxHealth * 0.8)
@@ -597,8 +597,11 @@
 		repair_rate = max(0, STANDARD_ORGAN_HEALING * (matter_bin.tier - 1) * 0.5)

 /obj/machinery/smartfridge/organ/process(seconds_per_tick)
-	for(var/obj/item/organ/organ in contents)
-		organ.apply_organ_damage(-repair_rate * organ.maxHealth * seconds_per_tick)
+	for(var/obj/item/organ/target_organ in contents)
+		if(!target_organ.damage)
+			continue
+
+		target_organ.apply_organ_damage(-repair_rate * target_organ.maxHealth * seconds_per_tick, required_organ_flag = ORGAN_ORGANIC)

 /obj/machinery/smartfridge/organ/Exited(atom/movable/gone, direction)
 	. = ..()
@@ -851,8 +851,11 @@
 		if(dna && !HAS_TRAIT(src, TRAIT_NOBLOOD))
 			blood_volume += (excess_healing * 2) //1 excess = 10 blood

-		for(var/obj/item/organ/organ as anything in organs)
-			organ.apply_organ_damage(excess_healing * -1) //1 excess = 5 organ damage healed
+		for(var/obj/item/organ/target_organ as anything in organs)
+			if(!target_organ.damage)
+				continue
+
+			target_organ.apply_organ_damage(excess_healing * -1, required_organ_flag = ORGAN_ORGANIC) //1 excess = 5 organ damage healed

 	return ..()

@@ -127,7 +127,10 @@
 		return ..()

 	for(var/obj/item/organ/organ_being_healed as anything in breather.organs)
-		organ_being_healed.apply_organ_damage(-0.5 * REM * seconds_per_tick)
+		if(!organ_being_healed.damage)
+			continue
+
+		organ_being_healed.apply_organ_damage(-0.5 * REM * seconds_per_tick, required_organ_flag = ORGAN_ORGANIC)

 	return ..()

@@ -227,17 +227,17 @@

 	if(SPT_PROB(2.5, seconds_per_tick) && iscarbon(drinker))
 		var/obj/item/organ/internal/eyes/eyes = drinker.get_organ_slot(ORGAN_SLOT_EYES)
-		if(drinker.is_blind())
-			if(istype(eyes))
+		if(eyes && IS_ORGANIC_ORGAN(eyes)) // doesn't affect robotic eyes
+			if(drinker.is_blind())
 				eyes.Remove(drinker)
 				eyes.forceMove(get_turf(drinker))
 				to_chat(drinker, span_userdanger("You double over in pain as you feel your eyeballs liquify in your head!"))
 				drinker.emote("scream")
 				drinker.adjustBruteLoss(15, required_bodytype = affected_bodytype)
-		else
-			to_chat(drinker, span_userdanger("You scream in terror as you go blind!"))
-			eyes.apply_organ_damage(eyes.maxHealth)
-			drinker.emote("scream")
+			else
+				to_chat(drinker, span_userdanger("You scream in terror as you go blind!"))
+				eyes.apply_organ_damage(eyes.maxHealth)
+				drinker.emote("scream")

 	if(SPT_PROB(1.5, seconds_per_tick) && iscarbon(drinker))
 		drinker.visible_message(span_danger("[drinker] starts having a seizure!"), span_userdanger("You have a seizure!"))
@@ -730,7 +730,7 @@
 		// Healing eye damage will cure nearsightedness and blindness from ... eye damage
 		eyes.apply_organ_damage(-2 * REM * seconds_per_tick * normalise_creation_purity(), required_organ_flag = affected_organ_flags)
 		// If our eyes are seriously damaged, we have a probability of causing eye blur while healing depending on purity
-		if(eyes.damaged && SPT_PROB(16 - min(normalized_purity * 6, 12), seconds_per_tick))
+		if(eyes.damaged && IS_ORGANIC_ORGAN(eyes) && SPT_PROB(16 - min(normalized_purity * 6, 12), seconds_per_tick))
 			// While healing, gives some eye blur
 			if(affected_mob.is_blind_from(EYE_DAMAGE))
 				to_chat(affected_mob, span_warning("Your vision slowly returns..."))
@@ -32,9 +32,22 @@
 			if((strain.spread_flags & DISEASE_SPREAD_SPECIAL) || (strain.spread_flags & DISEASE_SPREAD_NON_CONTAGIOUS))
 				continue

-			if(methods & (INJECT|INGEST|PATCH))
+			if(methods & INGEST)
+				if(!strain.has_required_infectious_organ(exposed_mob, ORGAN_SLOT_STOMACH))
+					continue
+
 				exposed_mob.ForceContractDisease(strain)
-			else if((methods & (TOUCH|VAPOR)) && (strain.spread_flags & DISEASE_SPREAD_CONTACT_FLUIDS))
+			else if(methods & (INJECT|PATCH))
+				if(!strain.has_required_infectious_organ(exposed_mob, ORGAN_SLOT_HEART))
+					continue
+
+				exposed_mob.ForceContractDisease(strain)
+			else if((methods & VAPOR) && (strain.spread_flags & DISEASE_SPREAD_CONTACT_FLUIDS))
+				if(!strain.has_required_infectious_organ(exposed_mob, ORGAN_SLOT_LUNGS))
+					continue
+
+				exposed_mob.ContactContractDisease(strain)
+			else if((methods & TOUCH) && (strain.spread_flags & DISEASE_SPREAD_CONTACT_FLUIDS))
 				exposed_mob.ContactContractDisease(strain)

 	if(iscarbon(exposed_mob))
@@ -150,6 +150,9 @@ INITIALIZE_IMMEDIATE(/obj/item/organ)
 /obj/item/organ/proc/on_remove(mob/living/carbon/organ_owner, special)
 	SHOULD_CALL_PARENT(TRUE)

+	if(!iscarbon(organ_owner))
+		stack_trace("Organ removal should not be happening on non carbon mobs: [organ_owner]")
+
 	for(var/trait in organ_traits)
 		REMOVE_TRAIT(organ_owner, trait, REF(src))

@@ -163,6 +166,24 @@ INITIALIZE_IMMEDIATE(/obj/item/organ)
 	SEND_SIGNAL(src, COMSIG_ORGAN_REMOVED, organ_owner)
 	SEND_SIGNAL(organ_owner, COMSIG_CARBON_LOSE_ORGAN, src, special)

+	var/list/diseases = organ_owner.get_static_viruses()
+	if(!LAZYLEN(diseases))
+		return
+
+	var/list/datum/disease/diseases_to_add = list()
+	for(var/datum/disease/disease as anything in diseases)
+		// robotic organs are immune to disease unless 'inorganic biology' symptom is present
+		if(IS_ROBOTIC_ORGAN(src) && !(disease.infectable_biotypes & MOB_ROBOTIC))
+			continue
+
+		// admin or special viruses that should not be reproduced
+		if(disease.spread_flags & (DISEASE_SPREAD_SPECIAL | DISEASE_SPREAD_NON_CONTAGIOUS))
+			continue
+
+		diseases_to_add += disease
+	if(LAZYLEN(diseases_to_add))
+		AddComponent(/datum/component/infective, diseases_to_add)
+
 /// Add a Trait to an organ that it will give its owner.
 /obj/item/organ/proc/add_organ_trait(trait)
 	LAZYADD(organ_traits, trait)
@@ -64,6 +64,9 @@
 	if(!damage) // No sense healing if you're not even hurt bro
 		return

+	if(IS_ROBOTIC_ORGAN(src)) // Robotic organs don't naturally heal
+		return
+
 	///Damage decrements by a percent of its maxhealth
 	var/healing_amount = healing_factor
 	///Damage decrements again by a percent of its maxhealth, up to a total of 4 extra times depending on the owner's health
@@ -196,6 +196,7 @@ As the Quartermaster, be sure to check the manifests on crates you receive to ma
 As the Quartermaster, you can construct an express supply console that instantly delivers crates by drop pod. The impact will cause a small explosion as well.
 As the Research Director, you can lock down cyborgs instead of blowing them up. Then you can have their laws reset or if that doesn't work, safely dismantled.
 As the Research Director, you can take AIs out of their cores by loading them into an intelliCard, which lets you see their laws, even ion/syndicate ones. It can then be placed into an AI system integrity restorer computer to revive and/or repair them.
+As the Virologist, robotic organs can give immunity to disease effects and transmissibility. Make use of the inorganic biology symptom to bypass the protection.
 As the Virologist, you only require small amounts of vaccine to heal a sick patient. Work with the Chemist to distribute your cures more efficiently.
 As the Virologist, your viruses can range from healing powers so great that you can heal out of critical status, or diseases so dangerous they can kill the entire crew with airborne spontaneous combustion. Experiment!
 As the Warden, if a prisoner's crimes are heinous enough you can put them in permabrig or the gulag. Make sure to check on them once in a while!