Synonyms to poison gas

ammonia, Dry Ice, Freon, acetylene, argon, asphyxiating gas, butane, carbon dioxide, carbon monoxide, castor-bean meal, chlorine, coal gas, commercial fertilizer, compost, coolant, dressing, dung, enrichener, ethane, ether, ethyl chloride, ethylene, fertilizer, fluorine, formaldehyde, freezing mixture, guano, helium, hydrogen, ice, ice cubes, illuminating gas, krypton, lewisite, liquid air, liquid helium, liquid oxygen, manure, marsh gas, methane, muck, mustard gas, natural gas, neon, night soil, nitrate, nitrogen, organic fertilizer, oxygen, ozone, phosphate, propane, radon, refrigerant, sewer gas, superphosphate, xenon, arsenic, DDD, DDT, Paris green, antimony, arsenic trioxide, beryllium, bichloride of mercury, cadmium, carbolic acid, carbon tetrachloride, cyanide, hydrocyanic acid, hyoscyamine, lead, mercuric chloride, mercury, nicotine, phenol, prussic acid, selenium, strychnine