Reagent transfer to a mob is split up into a type proc.

code/modules/mob/living/carbon/carbon.dm

@@ -552,4 +552,12 @@
 	else
 		if(src.wear_mask)						//if the mob is not human, it cleans the mask without asking for bitflags
 			if(src.wear_mask.clean_blood())
-				src.update_inv_wear_mask(0)
+				src.update_inv_wear_mask(0)
+
+/mob/living/carbon/handle_reagent_transfer(var/datum/reagents/holder, var/amount = 1, var/chem_type = CHEM_BLOOD, var/multiplier = 1, var/copy = 0)
+	if(chem_type == CHEM_BLOOD)
+		return holder.trans_to_holder(reagents, amount, multiplier, copy)
+	if(chem_type == CHEM_INGEST)
+		return ingest(holder, ingested, amount, multiplier, copy)
+	if(chem_type == CHEM_TOUCH)
+		return holder.trans_to_holder(touching, amount, multiplier, copy)

code/modules/mob/living/simple_mob/subtypes/animal/sif/grafadreka.dm

@@ -296,6 +296,9 @@ var/global/list/last_drake_howl = list()
 		return ..()
 	return 0.25 // Quarter nutrition from non-meat.
 
+/mob/living/simple_mob/animal/sif/grafadreka/handle_reagent_transfer(var/datum/reagents/holder, var/amount = 1, var/chem_type = CHEM_BLOOD, var/multiplier = 1, var/copy = 0)
+	return holder.trans_to_holder(reagents, amount, multiplier, copy)
+
 /mob/living/simple_mob/animal/sif/grafadreka/Life()
 	. = ..()
 

code/modules/mob/mob.dm

@@ -1187,4 +1187,9 @@
 		return mind.grab_ghost(force = force)
 
 /mob/proc/get_sound_volume_multiplier()
-	return !ear_deaf
+	return !ear_deaf
+
+/mob/proc/handle_reagent_transfer(var/datum/reagents/holder, var/amount = 1, var/chem_type = CHEM_BLOOD, var/multiplier = 1, var/copy = 0)
+	var/datum/reagents/R = new /datum/reagents(amount)
+	. = holder.trans_to_holder(R, amount, multiplier, copy)
+	R.touch_mob(src)

code/modules/reagents/holder/holder.dm

@@ -413,24 +413,9 @@
 		perm = L.reagent_permeability()
 	return trans_to_mob(target, amount, CHEM_TOUCH, perm, copy)
 
-/datum/reagents/proc/trans_to_mob(var/mob/target, var/amount = 1, var/type = CHEM_BLOOD, var/multiplier = 1, var/copy = 0) // Transfer after checking into which holder...
-	if(!target || !istype(target))
-		return
-	if(iscarbon(target))
-		var/mob/living/carbon/C = target
-		if(type == CHEM_BLOOD)
-			var/datum/reagents/R = C.reagents
-			return trans_to_holder(R, amount, multiplier, copy)
-		if(type == CHEM_INGEST)
-			var/datum/reagents/R = C.ingested
-			return C.ingest(src, R, amount, multiplier, copy)
-		if(type == CHEM_TOUCH)
-			var/datum/reagents/R = C.touching
-			return trans_to_holder(R, amount, multiplier, copy)
-	else
-		var/datum/reagents/R = new /datum/reagents(amount)
-		. = trans_to_holder(R, amount, multiplier, copy)
-		R.touch_mob(target)
+/datum/reagents/proc/trans_to_mob(var/mob/target, var/amount = 1, var/chem_type = CHEM_BLOOD, var/multiplier = 1, var/copy = 0) // Transfer after checking into which holder...
+	if(istype(target))
+		return target.handle_reagent_transfer(src, amount, chem_type, multiplier, copy)
 
 /datum/reagents/proc/trans_to_turf(var/turf/target, var/amount = 1, var/multiplier = 1, var/copy = 0) // Turfs don't have any reagents (at least, for now). Just touch it.
 	if(!target)
@@ -517,7 +502,7 @@
 	trans_to(T, total_volume, multiplier, copy)
 	if (total_volume <= 0)
 		qdel(src)
-		
+
 /**
  * Calls [/datum/reagent/proc/on_update] on every reagent in this holder
  *

code/modules/reagents/readme.md

@@ -118,7 +118,7 @@ About the Holder:
 			Checks mob's clothing if [clothes] is 1 and transfers [amount] reagents to mob's skin.
 			Don't call this directly. Call apply_to() instead.
 
-		trans_to_mob(var/mob/target, var/amount = 1, var/type = CHEM_BLOOD, var/multiplier = 1, var/copy = 0)
+		trans_to_mob(var/mob/target, var/amount = 1, var/chem_type = CHEM_BLOOD, var/multiplier = 1, var/copy = 0)
 			Transfers [amount] reagents to the mob's appropriate holder, depending on [type]. Ignores protection.
 
 		trans_to_turf(var/turf/target, var/amount = 1, var/multiplier = 1, var/copy = 0)
@@ -302,4 +302,4 @@ About the Tools:
 			transfer code since you will not be able to use the standard
 			tools to manipulate it.
 
-*/
+*/

code/modules/reagents/reagent_containers/syringes.dm

@@ -219,7 +219,7 @@
 				update_icon()
 
 			if(trans)
-				to_chat(user, "<span class='notice'>You inject [trans] units of the solution. The syringe now contains [src.reagents.total_volume] units.</span>")
+				to_chat(user, SPAN_NOTICE("You inject [trans] unit\s of the solution. The syringe now contains [src.reagents.total_volume] unit\s."))
 				if(ismob(target))
 					add_attack_logs(user,target,"Injected with [src.name] containing [contained], trasferred [trans] units")
 			else