In 2014, the American Association of Poison Control Centers reported about 6,000 exposures to<unk> <unk>  in the US in 2013, compared with 13,600 exposures to carbon monoxide, which was the most common poison<unk>  exposure; the year before they reported about 5,500 cases of<unk>  compared with around 14,300 cases of carbon monoxide poisoning.
Chlorine gas poisoning
Carbon monoxide poisoning
Nitrogen dioxide poisoning
Cyanide poisoning
Salicylate poisoning
Arsenic poisoning
Organophosphate poisoning
Aluminium phosphide poisoning