“Smoking is a filthy habit that kills.”
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Can’t be definitively proven,especially as 2nd hand smoke..
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The second hand smoke issue is very overblown. However, it is beyond annoying to visit a place of business or home where the occupants regularly smoke inside. It takes a very stout air cleaning system to keep the air reasonable fresh in a bar that allows smoking. Much better to set up a smoking patio outside, where patrons can enjoy their smoke without annoying and chasing away the rest of the potential customers.