auxgm part 1

see also https://github.com/Baystation12/Baystation12/blob/dev/code/modules/xgm/xgm_gas_data.dm

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

@@ -232,8 +232,7 @@
 	if(holder && holder.my_atom)
 		var/turf/open/T = get_turf(holder.my_atom)
 		if(istype(T))
-			var/datum/gas/gastype = /datum/gas/nitrogen
-			T.atmos_spawn_air("[initial(gastype.id)]=50;TEMP=2.7")
+			T.atmos_spawn_air("n2=50;TEMP=2.7")
 
 /datum/chemical_reaction/slime/slimefireproof
 	name = "Slime Fireproof"