american spirit cigarettes types chart Which do Americans think are safer? A population-based analysis with wave 1 of the PATH study Natural American Spirit - Tobacco

The best possible CADR rating for removing smoke is 450 so look an air purifier with a CADR rating of at least 450 to ensure maximum protection

If you need a cigarette you can always go out and buy one

For reference, Kent Convertibles seems to have followed this idea

Strengths of this study include the use of data from 2 separate studies that differed in many aspects (eg, study design, eligibility criteria, recruitment methods, measures available to identify AS brand smokers)

J Expo Anal Environ Epidemiol 11(3):231252 Laden F, Schwartz J, Speizer FE, Dockery DW (2006) Reduction in fine particulate air pollution and mortality: extended follow-up of the Harvard Six Cities study