Feb. 8, 2010 — Taking a breath inside a smoker’s home or car might increment your risk of cancer, indeed on the off chance that there’s not a lit cigarette in locate.

Tobacco smoke residue sneaking in carpets, upholstered furniture, and on other everyday surfaces can react with common chemicals in indoor air to form cancer-causing substances, according to a modern think about within the Proceedings of the National Institute of Sciences.

Tobacco smoke buildup on everyday surfaces has recently been named “thirdhand” smoke. Researchers say their discoveries advance illustrate that introduction to thirdhand smoke could be a potential long-term health hazard. It is particularly concerning for infants and toddlers, who tend to have more visit contact with the contaminated surfaces when crawling and playing.

For the consider, Hugo Destaillats and colleagues looked at how nicotine carried on when exposed to a common indoor discuss pollutant called nitrous acid (HONO) found inside a smoker’s vehicle. Nicotine is released into the air amid smoking and continues for weeks to months on indoor surfaces. HONO is found in higher levels inside than outside.

The nicotine responded with the indoor air pollutant to create carcinogenic compounds called tobacco-specific nitrosamines (TSNAs). Researchers found “substantial levels” of TSNAs on surfaces inside the smoker’s truck that was used within the ponder. More than half of the cancer-causing compounds remained more than two hours after the cigarette smoke had cleared.

Analysts say the foremost likely human exposure to TSNA is by touching a surface that has been contaminated with tobacco smoke, such as clothing, furniture, even skin or hair. The ponder creators warn that newborn children and young children are at danger of getting higher exposures than grown-ups.

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