Like Kendall and Kaleea, I am automatically "banned " from pubs, restaurants folk clubs, or any public function where smoking is the "norm". I cannot sit comfortably and eat in a restaurant---or a private home--where even one person is smoking. This is something very hard to understand by habitual smokers, particularly those who think [seldom with justification---] that their smoking has done them no physical harm. But to call aversion to second-hand smoke "paranoia" is a form of insult, used to ridicule the statements of those affected by it. Please be aware--the effects of downstream or second hand smoke can range from simple irritation to real distress.