Fixes all bits of code that check if something is under a tile that weren't being done

code/game/objects/effects/effect_system/effects_foam.dm

@@ -141,6 +141,10 @@
 	for(var/obj/O in range(0,src))
 		if(O.type == src.type)
 			continue
+		if(isturf(O.loc))
+			var/turf/T = O.loc
+			if(T.intact && HAS_TRAIT(O, TRAIT_T_RAY_VISIBLE))
+				continue
 		if(lifetime % reagent_divisor)
 			reagents.expose(O, VAPOR, fraction)
 	var/hit = 0

code/game/objects/effects/effect_system/effects_smoke.dm

@@ -232,6 +232,8 @@
 		for(var/atom/movable/AM in T)
 			if(AM.type == src.type)
 				continue
+			if(T.intact && HAS_TRAIT(AM, TRAIT_T_RAY_VISIBLE))
+				continue
 			reagents.expose(AM, TOUCH, fraction)
 
 		reagents.expose(T, TOUCH, fraction)