diff --git a/code/modules/mob/living/carbon/carbon_procs.dm b/code/modules/mob/living/carbon/carbon_procs.dm
index b76824dce3d..51369de4f06 100644
--- a/code/modules/mob/living/carbon/carbon_procs.dm
+++ b/code/modules/mob/living/carbon/carbon_procs.dm
@@ -1235,10 +1235,7 @@ so that different stomachs can handle things in different ways VB*/
 		. |= LH.GetAccess()
 
 /mob/living/carbon/proc/can_breathe_gas()
-	if(isnull(internal)) // no internals - breath from environment
-		return TRUE
-
-	if(wear_mask?.flags & BLOCK_GAS_SMOKE_EFFECT || head?.flags & BLOCK_GAS_SMOKE_EFFECT)
+	if(wear_mask?.flags & BLOCK_GAS_SMOKE_EFFECT || head?.flags & BLOCK_GAS_SMOKE_EFFECT || internal)
 		return FALSE
 
 	return TRUE