diff --git a/code/game/objects/items/weapons/cigs_lighters.dm b/code/game/objects/items/weapons/cigs_lighters.dm
index 36757e3d92..5ec7f97d6d 100644
--- a/code/game/objects/items/weapons/cigs_lighters.dm
+++ b/code/game/objects/items/weapons/cigs_lighters.dm
@@ -167,9 +167,12 @@ CIGARETTE PACKETS ARE IN FANCY.DM
 		location.hotspot_expose(700, 5)
 	if(reagents && reagents.total_volume)	//	check if it has any reagents at all
 		if(iscarbon(loc) && (src == loc:wear_mask)) // if it's in the human/monkey mouth, transfer reagents to the mob
+			if(istype(loc, /mob/living/carbon/human))
+				var/mob/living/carbon/human/H = loc
+				if(H.species.flags & IS_SYNTHETIC)
+					return
 			var/mob/living/carbon/C = loc
-			if(C.flags & IS_SYNTHETIC)
-				return
+
 			if(prob(15)) // so it's not an instarape in case of acid
 				reagents.reaction(C, INGEST)
 			reagents.trans_to(C, REAGENTS_METABOLISM)
diff --git a/code/game/objects/items/weapons/tools.dm b/code/game/objects/items/weapons/tools.dm
index 3879dbbfda..ad7ec85f14 100644
--- a/code/game/objects/items/weapons/tools.dm
+++ b/code/game/objects/items/weapons/tools.dm
@@ -357,7 +357,7 @@
 	if(istype(user, /mob/living/carbon/human))
 		var/mob/living/carbon/human/H = user
 		var/datum/organ/internal/eyes/E = H.internal_organs["eyes"]
-		if(H.flags & IS_SYNTHETIC)
+		if(H.species.flags & IS_SYNTHETIC)
 			return
 		switch(safety)
 			if(1)
diff --git a/code/modules/mob/living/carbon/human/life.dm b/code/modules/mob/living/carbon/human/life.dm
index 0580d55229..33c0c018bd 100644
--- a/code/modules/mob/living/carbon/human/life.dm
+++ b/code/modules/mob/living/carbon/human/life.dm
@@ -254,7 +254,7 @@
 					adjustToxLoss(-(rads))
 					updatehealth()
 					return
-				if(flags & IS_SYNTHETIC)
+				if(species.flags & IS_SYNTHETIC)
 					return
 
 				var/damage = 0