Makes gas reagents have standardized behavior, skrell liver behavior generalized

code/modules/reagents/oldchem/reagents/_reagent_base.dm

@@ -63,13 +63,18 @@
 	return
 
 /datum/reagent/proc/on_mob_life(var/mob/living/M as mob, var/alien)
-	if(!istype(M, /mob/living)) // YOU'RE A FUCKING RETARD NEO WHY CAN'T YOU JUST FIX THE PROBLEM ON THE REAGENT - Iamgoofball
-		return //Noticed runtime errors from facid trying to damage ghosts, this should fix. --NEO
-				// Certain elements in too large amounts cause side-effects
+	if(!istype(M))
+		return
+	if(reagent_state == GAS && M.stat != DEAD && ishuman(M))
+		// make gas reagents affect people like the gasses
+		var/mob/living/carbon/human/H = M
+		if(id == H.species.breath_type)
+			M.adjustOxyLoss(-2*REM)
+		else if(id == H.species.poison_type)
+			M.adjustToxLoss(REAGENTS_METABOLISM)
 	if(holder)
-		holder.remove_reagent(src.id, metabolization_rate) //By default it slowly disappears.
+		holder.remove_reagent(id, metabolization_rate) //By default it slowly disappears.
 		current_cycle++
-	return
 
 // Called when two reagents of the same are mixing.
 /datum/reagent/proc/on_merge(var/data)

code/modules/reagents/oldchem/reagents/drink/reagents_alcohol.dm

@@ -36,8 +36,7 @@
 	if(ishuman(M) && !M.isSynthetic())
 		var/mob/living/carbon/human/H = M
 		L = H.get_int_organ(/obj/item/organ/internal/liver)
-		if(!L || (istype(L) && L.dna.species in list("Skrell", "Neara")))
-			d*=5
+		d *= L ? L.alcohol_intensity : 5
 
 	M.dizziness += dizzy_adj.
 	if(d >= slur_start && d < pass_out)

code/modules/reagents/oldchem/reagents/reagents_misc.dm

@@ -42,16 +42,6 @@
 	reagent_state = GAS
 	color = "#808080" // rgb: 128, 128, 128
 
-/datum/reagent/oxygen/on_mob_life(var/mob/living/M as mob, var/alien)
-	if(M.stat == 2) return
-	if(ishuman(M))
-		var/mob/living/carbon/human/H = M
-		if(H.species && (H.species.name == "Vox" || H.species.name =="Vox Armalis"))
-			M.adjustToxLoss(REAGENTS_METABOLISM)
-			holder.remove_reagent(src.id, REAGENTS_METABOLISM) //By default it slowly disappears.
-			return
-	..()
-
 
 /datum/reagent/nitrogen
 	name = "Nitrogen"
@@ -60,16 +50,6 @@
 	reagent_state = GAS
 	color = "#808080" // rgb: 128, 128, 128
 
-/datum/reagent/nitrogen/on_mob_life(var/mob/living/M as mob, var/alien)
-	if(M.stat == 2) return
-	if(ishuman(M))
-		var/mob/living/carbon/human/H = M
-		if(H.species && (H.species.name == "Vox" || H.species.name =="Vox Armalis"))
-			M.adjustOxyLoss(-2*REM)
-			holder.remove_reagent(src.id, REAGENTS_METABOLISM) //By default it slowly disappears.
-			return
-	..()
-
 
 /datum/reagent/hydrogen
 	name = "Hydrogen"