In case your mom didn’t tell you, mixing bleach and ammonia can kill you. The nitty-gritty details of the chemical reaction aren’t important, but the end result is a release of chlorine gas. Chlorine gas is so dangerous, it was used as a chemical warfare agent in World War I.
If you discover someone exposed to chlorine gas, follow these steps to stay safe and get the help needed.
Full information please see http://firstaid.about.com/od/hazardousmaterials/ht/bleachgas.htm