The gas is odorless, so manufacturers add methyl mercaptan, which produces a foul smell like rotten cabbage, as a warning sign
*Based on the totality of evidence available for IQOS in comparison, range of harmful chemicals (excluding nicotine) compared to the smoke of a reference cigarette
Pattern of inhalation of tobacco smoke in pipe, cigarette, and never smokers
National Institute of Health, National Library of Medicine, Women and birth: Journal of the Australian College of Midwives , Maternal vaping and pregnancy adverse outcomes: A systematic review and meta-analysisOpens a new window, July 2025
Legislation to require independent fraud and accuracy checks has remained stalled in Sacramento for two years amid backroom negotiations between industry players and regulators