The air we breathe.
D000393:Air Pollutants / Q000009:adverse effects*; D000395:Air Pollutants, Occupational / Q000009:adverse effects*; D000777:Anesthetics / Q000009:adverse effects*; D006801:Humans; D009873:Operating Rooms
D000393:Air Pollutants; D000395:Air Pollutants, Occupational; D000777:Anesthetics