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While laboratory tests show a reduction of tar and nicotine in cigarette smoke, filters are ineffective at removing gases of low molecular weight, such as carbon monoxide

Retrieved 2026-06-08

Key Takeaways Cigarettes contain 11.9 to 14.5 mg of nicotine, but smokers typically absorb only 1-2 mg per cigarette

The proposed rule does not include e-cigarettes, nicotine pouches, noncombusted cigarettes (such as heated tobacco products that meet the definition of a cigarette), waterpipe tobacco (hookah), smokeless tobacco products, or premium cigars

The title "Cigarette Psychology" draws attention to the symbolic meaning of smoking gestures