few more

code/game/objects/items/devices/advnifrepair.dm

@@ -27,7 +27,7 @@
 		var/obj/item/stack/nanopaste/np = W
 		if((supply.get_free_space() >= efficiency) && np.use(1))
 			to_chat(user, span_notice("You convert some nanopaste into programmed nanites inside \the [src]."))
-			supply.add_reagent(id = "nifrepairnanites", amount = efficiency)
+			supply.add_reagent(id = REAGENT_ID_NIFREPAIRNANITES, amount = efficiency)
 			update_icon()
 		else if(supply.get_free_space() < efficiency)
 			to_chat(user, span_warning("\The [src] is too full. Empty it into a container first."))

code/game/objects/items/weapons/extinguisher.dm

@@ -52,7 +52,7 @@
 
 /obj/item/extinguisher/Initialize()
 	create_reagents(max_water)
-	reagents.add_reagent("firefoam", max_water)
+	reagents.add_reagent(REAGENT_ID_FIREFOAM, max_water)
 	if(rand_overlays)
 		var/choice = rand(1,rand_overlays)
 		add_overlay("[item_state]O[choice]")