Ambient tobacco smoke measurement.
D000393:Air Pollutants / Q000032:analysis*; D002248:Carbon Monoxide / Q000032:analysis*; D006801:Humans; D008722:Methods; D010947:Plants, Toxic; D012906:Smoke / Q000032:analysis*; D012907:Smoking; D014026:Nicotiana
D000393:Air Pollutants; D012906:Smoke; D002248:Carbon Monoxide