tobacco picture warnings Why cigarettes in the U.S. don't have graphic warning labels Reducing the appeal of smoking:

Plain cigarette packaging rules in force after court ruling Legislation also bans smaller packet sizes and healthy-sounding phrases on boxes New laws that will require all cigarette brands to adopt uniform plain packaging dominated by images of the ill-effects of smoking came into force today, after the government won a High Court ruling yesterday

Researchers suggest that strengthening point-of-sale pricing laws may help reduce these disparities

and that any discrepancies from the study as originally planned have been explained

In the end, unless the smoker is violating rules, you cannot force him to change, but you can do your best to limit your exposure