Yes. Not only is smog known to induce asthma attacks by irritating the lungs and throat, but studies have shown that long-term exposure can actually cause an individual to develop asthma. In a study conducted in 2002, researchers found that children, particularly those who frequently engaged in athletic activities, were more likely to develop asthma than children who lived in areas with cleaner air or were less active. Ozone, which is produced when primary smog particles interact with sunlight, is considered by many to be the main contributor to smog-related asthma, since it is known to irritate the lungs and cause scarring.
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