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South Africa

No idea where to start Still have doubts about your issue

Clean air flows in from beneath the floorboards, while the room air with its smoke and odors is extracted through holes in the ceiling

However, your first consideration should be cleaning hard surfaces like windows, ceilings, mirrors, kitchen counters, and floors

Giovino G, Chaloupka F, Hartman A, Joyce K, Chriqui J, Orleans C, Wende K: Cigarette smoking prevalence and policies in the 50 states: An era of change-- The Robert Wood Johnson FoundationImapct Teen Tobacco Chart Book

Report and interview with Carol McGruder is the co-chair of the African American Tobacco Control Leadership Council