It's silly to think that entrepreneurs would not take that into consideration when formulating their business regulations. That's why many places have created nonsmoking sections and why others prohibit smoking in their privately owned places. But now this choice has not only been taken out of the smokers' hands, but out of the business owners' as well. One reason for the ban was to avoid exposing restaurant workers to secondhand smoke. Now this is a valid point, but again something the government should not have felt the need to take in its own hands.
Business owners are fully capable of making their own rules.
While the heart of this issue is the fact that we as a people are having more and more choices removed from our control, it's important to look at the actual habit of smoking. While smoking is a health hazard, it's a health hazard that's legal. Hygienically, smoking isn't pleasant. It smells, although nothing that some cologne or gum can't cure, and it makes your teeth yellow. But if these are valid arguments for not wanting people to smoke around you, thus prohibiting smoking, you might as well pass a law requiring people to take a shower and brush their teeth.