text: when carbon tetracholride reacts with hot water it produces phosgene. phosege was used in poison-gas warfare.. in ww1, based upon this chemistry, carbin tetrachloride is no loner used in... fire extinguishers, dry leanin, chemial reactions, toilet bowl cleaners fire extinguishers.  if someone is spraying a fire with ccl4, and someone else comes along and tries to put it out with h2o...