Adds weedkiller smoke checks to hydro trays and spreading plants.

code/modules/clothing/spacesuits/rig/rig.dm

@@ -134,7 +134,7 @@
 		verbs |= /obj/item/weapon/rig/proc/toggle_chest
 
 	for(var/obj/item/piece in list(gloves,helmet,boots,chest))
-		if(!piece)
+		if(!istype(piece))
 			continue
 		piece.canremove = 0
 		piece.name = "[suit_type] [initial(piece.name)]"
@@ -145,7 +145,6 @@
 		piece.siemens_coefficient = siemens_coefficient
 		piece.permeability_coefficient = permeability_coefficient
 		piece.unacidable = unacidable
-		if(islist(species_restricted)) piece.species_restricted = species_restricted.Copy()
 		if(islist(armor)) piece.armor = armor.Copy()
 
 	update_icon(1)

code/modules/hydroponics/spreading/spreading_growth.dm

@@ -35,6 +35,11 @@
 		die_off()
 		return 0
 
+	for(var/obj/effect/effect/smoke/chem/smoke in view(1, src))
+		if(smoke.reagents.has_reagent("plantbgone"))
+			die_off()
+			return
+
 	// Handle life.
 	var/turf/simulated/T = get_turf(src)
 	if(istype(T))

code/modules/hydroponics/trays/tray_process.dm

@@ -1,5 +1,10 @@
 /obj/machinery/portable_atmospherics/hydroponics/process()
 
+	// Handle nearby smoke if any.
+	for(var/obj/effect/effect/smoke/chem/smoke in view(1, src))
+		if(smoke.reagents.total_volume)
+			smoke.reagents.copy_to(src, 5)
+
 	//Do this even if we're not ready for a plant cycle.
 	process_reagents()
 

code/modules/reagents/Chemistry-Reagents.dm

@@ -1855,10 +1855,7 @@ datum
 					var/obj/effect/alien/weeds/alien_weeds = O
 					alien_weeds.health -= rand(15,35) // Kills alien weeds pretty fast
 					alien_weeds.healthcheck()
-				else if(istype(O,/obj/effect/plant)) //even a small amount is enough to kill it
-					del(O)
 				else if(istype(O,/obj/effect/plant))
-					if(prob(50))
 					var/obj/effect/plant/plant = O
 					plant.die_off()
 				else if(istype(O,/obj/machinery/portable_atmospherics/hydroponics))