I have never smoked but grew up in a hoesehold where my mother smoked. I only saw it as second nature then. Now I see it in a different light. I really can't stand being around someone who smokes or the smell of it on there clothes. Nor do I like to enter a household where the people smoke in the house. I also do not like it when people who smoke stand outside of a building where smoking is not allowed and smoke right in front of the door. Don't get me wrong, I think you should decide to do whatever you want with your body. I don't however think that you shold subject other people to your vices.
For instace, I don't "break wind" in other peoples houses if I can help it. I know that it may be different than smoking, but it's along the same lines. I think it is just polite to think of others when lighting up or doing any other thing that could directly affect someone.
I am not against smoking, just bad manners.

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That being said.... Lets fish.