You are one closed minded ****ing idiot Rouge. There's a reason many places are adopting laws saying you can't smoke in certain places including within so many feet of doors and entryways.
Furthermore it's called common courtesy as others have noted. Why should I have to tell someone to put out a damn cancer stick when I want to breath air. They should go to a designated area so they can kill each other.
Furthermore if you really want to get into it... Talk about something with proven cancer connections and should be illegal... If not for big money donors.