Exposure to smoke is dangerous regardless of your health status—so follow these steps to limit the risk.
Wildfire smoke is a mixture of water vapor, gases, and microscopic particles known as particulate matter. The smallest of these particles, known as PM2.5 because they have a diameter of less than 2.5 micrometers, pose the most danger to human health. They can lodge deep in the lungs and sometimes enter the bloodstream. Earlier this week, PM2.5 around Los Angeles rose to “hazardous” levels, the highest warning on the US Air Quality Index.
She says if someone is short of breath, wheezing, or has an elevated respiratory rate from inhaling smoke, that makes the heart beat faster and can exacerbate preexisting heart problems. Even healthy people can experience chest pain and shortness of breath due to smoke inhalation. It’s why health officials in Los Angeles County are urging everyone in areas with unhealthy air quality to stay indoors as much as possible.
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