cfcs Spray can pollutants Pollutants in old aerosol cans, for short Ozone eaters, for short Onetime aerosol pollutants, for short One-time aerosol pollutants, for short Montreal Protocol concerns Former aerosol chemicals, for short Compounds phased out by the Montreal Protocol Banned refrigerants Regulated pollutants, for short Ozone destroyers, for short Ozone-destroying chemicals, for short Ozone layer destroyers (abbr.) Ozone-depleting chemicals, briefly Ozone no-nos Frowned-upon aerosol chemicals, for short They're harmful to the ozone (abbr.)