<unk>  device<unk>  is the level of<unk><unk>  in a person's exhalation. It can be measured in a<unk>  test, generally by using a<unk><unk> <unk>  monitor<unk>  CO monitor), such as for motivation and education for smoking cessation and also as a clinical aid in assessing<unk><unk>  poisoning. The<unk>  level has been shown to have a close relationship with the level of CO in the blood known as<unk> yhaemoglobin (%COHb) or "blood CO". This correlation allows for the level of CO in the blood to be indirectly measured through a<unk>  sample.
Breath carbon monoxide
Biot's respiration
Mouth breathing
Phlegm
Bad breath
Bottled gas
Liquid breathing
Smoke