Lachrymator - tear gas. This caused temporary blindness and serious irritation to the nose and throat of the victims.
Sternutator gasses - poisonous gas, chlorine, phosgene and diphosgene. Chlorine gas mixes with moisture so it will attack the eyes and lungs.
Suffocating gasses - Caused severe edema of the lungs and death from asphyxiation could come within hours.