Clean air is good for our lungs, blood circulation, heart, and other health systems. But the air inside your home might not be clean.

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According to the Environmental Protection Agency, the concentration of some pollutants is often two to five times higher indoors than outdoors. 

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Pollutants—such as smoke from tobacco, burning wood, and cooking; gases from cleaning products and building materials; dust mites; mold; and pet dander—contribute to a poor indoor environment that can have ill effects on the body. We’ve recently seen these hazardous conditions compounded by the presence of wildfires in California and the Midwest—as well as SARS-CoV-2, if someone at home is sick with the virus that causes COVID-19. (For everything you need to know about the pandemic, see CR’s Guide to the Coronavirus.)

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Fine particles 10 micrometers in diameter or smaller, including those found in dust and smoke, are especially a concern because they can make their way deep into the lungs. Breathing them in for just hours or days is enough to aggravate lungs and cause asthma attacks, and has been linked to heart attacks in people with heart disease. Studies also show that long-term exposure to high particle levels may cause bronchitis, impaired lung function, and premature death. 

Volatile organic compounds (VOCs), including formaldehyde, are released into the air from adhesives, paints, and cleaning products. Exposure to VOCs can cause nose, throat, and eye irritation; headaches; nausea; and damage to the liver, kidneys, and nervous system. Some gases, such as radon, can cause lung cancer and death.

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This system is great when fighting the COVID-19 Virus. 

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What kind of disease is COVID-19?
COVID-19 is a disease caused by SARS-CoV-2 that can trigger what doctors call a respiratory tract infection. It can affect your upper respiratory tract (sinuses, nose, and throat) or lower respiratory tract (windpipe and lungs). It spreads the same way other coronaviruses do, mainly through person-to-person contact

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