Breath carbon monoxide
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Breath carbon monoxide is the level of carbon monoxide in a person's exhalation. It can be measured in a breath carbon monoxide test, generally by using a carbon monoxide breath monitor, such as for m
Breath carbon monoxide device
Common commercial breath CO monitor model, displaying a breath concentration reading with its corresponding blood concentration
Passive smoking
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Passive smoking is the inhalation of tobacco smoke, called passive smoke, secondhand smoke or environmental tobacco smoke, by individuals other than the active smoker. It occurs when tobacco smoke dif
Tobacco smoke in an English pub before a ban came into place in 2007
Old prevention poster from New Zealand. "When a child breathes air filled with cigarette smoke it can be as bad as if he actually smoked the cigarette himself."
Children playing while their mothers smoke, 1945. Scenes such as this were common before the dangers of passive smoke were widely recognized.