It's about to become an infraction (in California) to do this if someone under the age of 18 is present.
http://news.yahoo.com/s/ap/20071011/...zenegger_bills
I'm not sure what to think about this. Smoking cigarettes is a legal activity, but I do agree that every effort should be made (by smokers) to keep cigarette smoke away from minors, and hopefully prevent them from becoming smokers themselves. So I have to say, that I reluctantly agree with these kinds of infractions.
Thoughts?