I didn't say your "thought process" was bad. I merely stated that it is inconsistent with the notions behind this country's government. Liberty and democracy are natural enemies as people decide that they not only want the freedom to live as they please, but to compel others to live according to their rules.
Your "public health and safety" argument again ignores the fundamental issue. The second-hand smoke research is based on consistent exposure over long periods of time not occasional exposure. As for obnoxious, I agree perfectly. Personally, I am a radical non-smoker and I find the habit disgusting and hate being exposed to it. I don't think a cigarette is necessary either, but why is that relevant? Do smokers need to run their decision by you or I?
Defending the rights of a property owner to allow a behavior you don't like may not seem like a "good fight." Of course, if you truly cherish liberty you cherish it for all people not just for yourself and your preferences. As you say, we are free to disagree. However, I am always disconcerted when people want to use "the rule of law" as an instrument to take fundamental freedoms away from others.