Chemical compounds carcinogenicity Ref.
carbon monoxide Not listed 19
benzene Group 1 19
formaldehyde Group 1 20
polycyclic aromatic hydrocarbons (PAHs) Group 1, Group 2A and group 2B 21
hydrogen cyanide Not listed 19
benzo(a)pyrene (BaP) Group 1 22
heterocyclic aromatic amines Not listed 23
aldehydes Group 1 24
phenolic compounds Not listed 19
volatile hydrocarbons, Group 2A 19
toluene Group 3 19
furan Group 2B 19
2-methylfuvan Not listed 19
isobutylene Group 1A 25
ter-penes and terpenoids Group 2B 26
tetrahydrocannabinol Not listed 27
cannabidiol Group 2B 28