Everyone knows that people smoke at bars. Phyllis Kahn may argue that secondhand smoke is harmful and that secondhand smoke is imposed against the will of innocent patrons who don't smoke. For a moment, let us accept the tenuous position that the limited exposure to secondhand smoke from an evening at a bar is absolutely proven to be harmful. What is simply overlooked by Phyllis Kahn and supporters of her bill is that no one forces anyone to go to a bar. Non-smokers know that people smoke in bars, yet they go anyway.
Bars are private establishments.
No one has to go to a bar, it is not an entitlement. Non-smokers who still go to bars do so because they make a conscious choice to sit in an atmosphere where smoking occurs. Bar owners provide an atmosphere that allows and facilitates smoking. Because the market makes it profitable to do so. Many patrons go to bars to smoke, and bar owners are aware of this.