anchor.diff:  	dangerous = TRUE
   	gas_overlay = "hexane"
   	moles_visible = MOLES_GAS_VISIBLE
  -	rarity = 100
  +	rarity = 500
   
   /obj/effect/overlay/gas
   	icon = 'icons/effects/atmospherics.dmi'
  
positive.code: 	dangerous = TRUE
  	gas_overlay = "proto_nitrate"
  	moles_visible = MOLES_GAS_VISIBLE
  	rarity = 100
  
  /datum/gas/zauker
  	id = "zauker"
  
negative.code: 	dangerous = TRUE
  	gas_overlay = "zauker"
  	moles_visible = MOLES_GAS_VISIBLE
  	rarity = 1
  
  /datum/gas/halon
  	id = "halon"
  