Chemical hazards and chemical warfare.
D000393:Air Pollutants / Q000506:poisoning; D000818:Animals; D002057:Burns, Chemical / Q000517:prevention & control; D002618:Chemical Warfare; D002959:Civil Defense; D004189:Disaster Planning; D004630:Emergencies; D004781:Environmental Exposure; D006801:Humans; D012306:Risk; D014730:Veterinary Medicine
D000393:Air Pollutants