world record for smoking a cigarette Jim Purol, world-record smoker How Charley Hull's viral cigarette

Animal Bioassays Researchers have tested the carcinogenic ability of tar in cigarette smoke in laboratory animals for more than nine decades and in animal inhalation studies of machine-generated cigarette smoke for more than five decades (Wynder and Hoffmann 1967)

After going over the above information, it might be so

The simple replacement of menthol with another cooling agent that lacks a characterizing odor threatens to derail the existing local and proposed federal menthol bans, said study coauthor Julie Zimmerman, professor of green engineering and of epidemiology (environmental health sciences) at the Yale School of Public Health, and vice provost for planetary solutions at Yale

Collectively, these results are consistent with most previous studies in laboratory animals and demonstrate conclusively that nicotine is not a carcinogen, co-carcinogen, tumor promoter, or inhibitor of NNK carcinogenesis