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The ability of an ozone generator to eliminate smoke odors depends on several key factors: While these factors determine how effective an ozone generator might be, they also highlight the challenges and limitations of using ozone as a long-term recurrent solution for odor removal

Smoking in the Balcony Only: When Movie Stars Sold Cigarettes (Museum and library version, 2005

Plus, while it may make intuitive sense that someone who smokes more intensely has a higher risk of developing lung cancer, studies have not shown that the risk due to smoking intensity is equivalent to the risk from smoking duration, as the pack-year standard implies, the authors said

7,8 Accordingly, the lungs of cigarette smokers reveal enormous numbers of both intracellular and extracellular particles, with the former most frequently being in macrophages (Figure 3)