Falk et al., in a of the risk for laryngeal cancer, found that: "Higher risks were associated with smoking nonfiltered than filtered cigarettes." For those who smoked filtered cigarettes, the OR was 5.9 (95% CI = 2.4-14.4); for those who smoked non-filtered cigarettes, the OR was 9.0 (95% CI = 3.2-25.1).

Well, consider that by banning smoking at all private clubs but creating an exemption for the city's Banquet Hall, it could potentially establish a competitive advantage for the city-owned facility over private facilities in competition for business from people looking for venues for celebrations.

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