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The study tested for cotinine, a tobacco metabolite used to assess exposure to secondhand smoke, and found that children living in apartments had higher levels of the chemical in their systems than those who lived in detached houses, even though their own units were smoke-free zones

Multimodal meta-analysis of structural and functional brain changes in first episode psychosis and the effects of antipsychotic medication

The key factors are: Smoke concentration Detector sensitivity Placement Ventilation Quantity burned When used safely and responsibly, incense is generally low-risk and unlikely to activate a properly positioned smoke detector

While the cancer risks for cigarette and cigar smoking and other tobacco usage are well documented, the association has cited research showing how e-cigarettes contain and emit a number of potentially toxic substances, as well as moderate evidence showing that youths who use e-cigarettes are at a heightened risk for asthma exacerbations