Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyll and haemoglobin breakdown of some animals, beyond TLV (50 ppm) ?

Question

Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyll and haemoglobin breakdown of some animals, beyond TLV (>50 ppm) ?

Accepted Answer

Causes asphyxia. Carbon monoxide is toxic and reduces the blood's ability to carry oxygen, leading to asphyxia.