Things that cause asthma episodes are called triggers. Indoor asthma triggers may be found at home, at school, or at work.
Common Indoor Asthma Triggers
Tobacco Smoke
Asthma can be triggered by smoke from the burning end of a cigarette, cigar, or pipe. Asthma can also be triggered by the smoke breathed out by a smoker.
Dust Mites
Dust mites are tiny bugs you can't see. Dust mites live in bed sheets, blankets, pillows, mattresses, soft furniture, carpets, and stuffed toys.
Mold & Mildew
Mold and mildew grow on damp surfaces such as shower curtains, bath toys, tubs, basins, and tiles. Leaky plumbing and roof leaks cause dampness, which can cause mold to grow in your home.
Cockroaches
Cockroach droppings and body parts may trigger asthma episodes.
Pets
The skin flakes and saliva of furry pets like cats and dogs can trigger asthma.
Other Indoor Asthma Triggers
Watch for these other possible triggers and items like them:
- Cleaning products, such as bleach
- Fumes from paint or paint thinner
- Scented sprays like perfume or air freshener
- Incense and scented candles
- Chalk dust
What can you do?
Use these resources to help you manage indoor asthma triggers.
- Asthma Triggers Checklist (PDF)
Use the Asthma Triggers Checklist to identify and remove indoor asthma triggers at home, school, or work - Home Environment Checklist (PDF)
Use the Home Environment Checklist to find and remove asthma triggers in each room of your home - Manage Asthma in the School Environment
Teach school staff 10 ways to manage asthma in the school environment
