Check for internals and accessibility on toxic farts.

Conflicts:
	code/modules/mob/living/carbon/human/emote.dm

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

@@ -552,7 +552,7 @@
 				var/turf/location = get_turf(src)
 				var/aoe_range=2 // Default
 				if(M_SUPER_FART in mutations)
-					aoe_range+=5
+					aoe_range+=3 //Was 5
 
 				// If we're wearing a suit, don't blast or gas those around us.
 				var/wearing_suit=0
@@ -570,7 +570,12 @@
 							reagents.add_reagent("space_drugs", rand(10,20))
 					else
 						// Was /turf/, now /mob/
+
 						for(var/mob/M in range(location,aoe_range))
+							if (M.internal != null && M.wear_mask && (M.wear_mask.flags & MASKINTERNALS))
+								continue
+							if(!airborne_can_reach(location,M,aoe_range))
+								continue
 							// Now, we don't have this:
 							//new /obj/effects/fart_cloud(T,L)
 							// But:
@@ -580,8 +585,6 @@
 							// So, let's give 'em space drugs.
 							if (M == src)
 								continue
-							if(!airborne_can_reach(get_turf(src), get_turf(M)))
-								continue
 							M.reagents.add_reagent("space_drugs",rand(1,10))
 						/*
 						var/datum/effect/effect/system/smoke_spread/chem/fart/S = new /datum/effect/effect/system/smoke_spread/chem/fart

code/modules/virus2/helpers.dm

@@ -37,12 +37,12 @@ proc/get_infection_chance(var/mob/living/carbon/M, var/vector = "Airborne")
 	return 1
 
 //Checks if table-passing table can reach target (5 tile radius)
-proc/airborne_can_reach(turf/source, turf/target)
+proc/airborne_can_reach(turf/source, turf/target, var/radius=5)
 	var/obj/dummy = new(source)
 	dummy.flags = FPRINT | TABLEPASS
 	dummy.pass_flags = PASSTABLE
 
-	for(var/i=0, i<5, i++) if(!step_towards(dummy, target)) break
+	for(var/i=0, i<radius, i++) if(!step_towards(dummy, target)) break
 
 	var/rval = (dummy.loc in range(1,target))
 	dummy.loc = null