reagent reaction() now use more methods. Instead of just INGEST or TOUCH, we now have INGEST (for injection, ingestion), TOUCH (for splashing), PATCH (for patch application and blob attack), and VAPOR (for smoke, foam and spray application).

- TOUCH no longer transfer reagent by default, it's now only used for touch based effect like being flammable when touched by fuel or you and your stuff being acided when touched by acid).

- PATCH does no transfer of its own (but actual patches code do make a transfer) but is used for touch effect that ignore clothes and protection (blob attacks, patches effect going through hardsuits)

- VAPOR does reagent transfer but it takes into account clothing protection

Fixes a typo in humanoid/get_permeability_prot
Fixes acid splashing on objects not destroying it. Fixes acid splashing on turf not destroying objects on the turf.

Changed damp rag smothering code a bit.

Blob Smoke now doesn't do anything.

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

@@ -58,14 +58,14 @@
 	for(var/obj/O in range(0,src))
 		if(O.type == src.type)
 			continue
-		reagents.reaction(O, TOUCH, fraction)
+		reagents.reaction(O, VAPOR, fraction)
 	var/hit = 0
 	for(var/mob/living/L in range(0,src))
 		hit += foam_mob(L)
 	if(hit)
 		lifetime++ //this is so the decrease from mobs hit and the natural decrease don't cumulate.
 	var/T = get_turf(src)
-	reagents.reaction(T, TOUCH, fraction)
+	reagents.reaction(T, VAPOR, fraction)
 
 	if(--amount < 0)
 		return
@@ -77,7 +77,7 @@
 	if(!istype(L))
 		return 0
 	var/fraction = 1/initial(lifetime)
-	reagents.reaction(L, TOUCH, fraction)
+	reagents.reaction(L, VAPOR, fraction)
 	lifetime--
 	return 1