Related by context. Frequent words. (Click for all words.) 65 CFCs 65 chlorofluorocarbons CFCs 63 Methyl bromide 61 respiratory irritant 61 Nitrogen oxides 60 chlorofluorocarbons 59 halogenated 59 polybrominated diphenyl ethers 59 ozone depleting 58 sulfur hexafluoride 58 aerosol sprays 57 refrigerants 57 ozone depleting chemicals 56 hydrofluorocarbons 56 nitrous oxides 56 sulfur dioxide SO2 56 HCFC 56 Sulfur dioxide 55 polycarbonate plastics 55 aerosols 55 ozone depleting substances 55 paint thinners 55 mold fungi 54 suspected carcinogen 54 fluorinated 54 potent greenhouse gas 54 Particulates 54 sulfur oxide 54 carbon tetrachloride 54 hydrogen chloride 54 polyethylene polypropylene 53 Carbon dioxide 53 coolants 53 latex paints 53 cleaning solvents 53 incomplete combustion 53 HCFCs 53 wood preservatives 53 freon 52 Nitrous oxide 52 ozone depletion 52 SF6 52 nitrogen trifluoride 52 carcinogenic chemicals 52 PCBs polychlorinated biphenyls 52 Aerosols 52 Anhydrous ammonia 52 Hydrogen peroxide 52 Paraquat 52 phosphine 52 Diethylene glycol 52 furan 52 mercury cadmium 52 degreasers 52 animal dander 52 smog forming 52 solvents 52 Inhalers 51 drain cleaners 51 Phthalates 51 peroxides 51 Lindane 51 propellants 51 Burning fossil fuels 51 benzene toluene 51 methylene chloride 51 oxidizers 51 Hydrochloric acid 51 thinners 51 Ammonium nitrate 50 plasticizers 50 absorbs carbon dioxide 50 suppressants 50 sodium nitrate 50 Greenhouse gases 50 ethylene oxide 50 MDIs 50 stick cookware 50 lead mercury cadmium 50 carbon dioxide methane nitrous 50 naturally occurring substance 50 particulate matter emissions 50 nitrogen oxides NOx 50 fluoropolymers 50 pyrethrins 50 super alloys 50 deodorizers 50 combustible gases 50 polyamides 50 Sulfate 50 chemically inert 50 stratospheric ozone 50 chemicals 50 Diesel exhaust 50 sulphates 49 hydraulic fluids 49 pollutants emitted 49 diazinon 49 Triclosan 49 trigger allergic reactions 49 chlorinated solvents