My father died of lung cancer after smoking two packs a day for 40 years.
Neither my wife, myself or our two children have ever smoked.
There is probably nothing worse than the smell of a cigar in a confined area.
Kissing a smoker is like licking an ashtray.
However, I have NO RIGHT to determine someone else's behavior. If smoking is legal where you are, smoke away. It is your right. If you die from smoking, that is also your right.