Australia, Canada, Mexico and the U.S. include different information about toxic chemicals in cigarette pack warnings.
Chemical | Australia | Canada | Mexico | U.S. |
|---|---|---|---|---|
| Benzene | New | New/Past | Never | Never |
| Carbon Monoxide | Past | Past | Past | Current |
| Cyanide | New | New/Past | New | Never |
| Formaldihyde | Never | Past | New | Never |
| Nitrosamines | Past | Past | Never | Never |
| Radioactive Polonium | Never | Never | New | Never |
