Indoor Asthma Triggers

Environmental tobacco smoke (secondhand smoke) can trigger asthma.

Some of the most common indoor asthma triggers include environmental tobacco smoke (secondhand smoke), dust mites, mold, cockroaches and other pests, and household pets. Visit these Web sites to learn about asthma triggers and how to reduce your exposure to them.

American Lung Associationexternal icon

Learn about asthma and how you can control asthma triggers.

  • Home Control of Asthma and Allergies
  • Learn how you can control your asthma at home
CDC’s National Center for Environmental Health
  • Air Pollutants This site provides information and frequently asked questions from federal, state, and private resources about asthma and indoor and outdoor air pollution.
  • Mold People with asthma may be more sensitive to mold. Mold can bring on symptoms of asthma or cause an asthma attack. This site provides basic facts about different kinds of mold and how to get rid of them.
CDC’s National Institute for Occupational Safety and Health

Learn about work-related asthma and how to prevent asthma symptoms.

U.S. Environmental Protection Agencyexternal icon

This federal agency informs people about the environment and develops and enforces regulations about the environment. Here you’ll find information about how you can control asthma triggers at home:

U.S. Department of Housing and Urban Developmentexternal icon

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Page last reviewed: January 20, 2022