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Your Best Day With Allergic Asthma

7 Surprising Triggers of Lung Trouble

Common pollutants, such as traffic exhaust and secondhand smoke, are well-known causes of lung problems, including asthma. But there are a number of other irritants—some of them found in your own home or car—that can also trigger asthma symptoms.
gas-stove-asthma

Credit: Getty Images

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Gas appliances

Nitrogen dioxide (NO2), a byproduct released by gas appliances, has been linked to asthma symptoms in children.

A 2008 study followed 150 asthmatic children in Baltimore over a six-month period; it found that children who lived in homes with higher levels of NO2 had more frequent wheezing, coughing, and chest tightness. (Most studies in adults have failed to find a similar effect.)

NO2 can aggravate asthma even in the relatively small amounts generated by gas stoves, heaters, and fireplaces. Properly venting appliances can help avoid unsafe NO2 levels, experts say.

Next: Candles

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