fix (#957)

Author: Kapu1178

code/modules/reagents/chemistry/recipes/pyrotechnics.dm

@@ -376,7 +376,7 @@
 	reaction_flags = REACTION_INSTANT
 
 /datum/chemical_reaction/pyrosium_oxygen/on_reaction(datum/reagents/holder, datum/equilibrium/reaction, created_volume)
-	holder.chem_temp += 10*created_volume
+	holder.expose_temperature(holder.chem_temp + (10 * created_volume), 1)
 
 /datum/chemical_reaction/pyrosium
 	results = list(/datum/reagent/pyrosium = 3)
@@ -388,8 +388,7 @@
 	thermic_constant = 0
 
 /datum/chemical_reaction/pyrosium/on_reaction(datum/reagents/holder, datum/equilibrium/reaction, created_volume)
-	holder.chem_temp = 20 // also cools the fuck down
-	return
+	holder.expose_temperature(20, 1) // also cools the fuck down
 
 /datum/chemical_reaction/reagent_explosion/nitrous_oxide
 	required_reagents = list(/datum/reagent/nitrous_oxide = 1)