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Cigarette smoke particles stick to surfaces, walls, and upholstery, causing lingering smells that get worse without cleaning or proper ventilation

"Perhaps a better question would be, 'When was the last time you smoked?', thus providing the opportunity for patients to give a more precise answer about whether they smoke at all and how much." The study was published in the journal JAMA Internal Medicine

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Growing health consciousness is also prompting more people to refrain from smoking

Opal fluors were applied at 1 in 1500 dilution, and slides were imaged on an Echo Revolve R4 microscope