You're Breathing PFAS in Indoor Air Right Now

PFAS isn't just in your water and your pans. It's in the air you breathe indoors. A new study found PFAS in indoor air and fine particles, and it's affecting people's lungs.

What the Study Found

A 2026 study in Environmental Pollution measured PFAS levels in indoor air and PM2.5 (fine particulate matter) inside university buildings. The researchers also tested the occupants' respiratory health. They found correlations between indoor PFAS exposure and respiratory symptoms.

PFAS gets into indoor air from treated carpets, furniture, clothing, nonstick coatings, and building materials. It attaches to dust particles that you inhale all day long.

Your Lungs Are a Direct Entry Point

When you breathe in PFAS-contaminated dust, it goes straight into your lungs. From there it enters your bloodstream. Indoor air exposure is especially concerning because most people spend 90% of their time indoors.

What You Can Do

Use a HEPA air purifier indoors. Vacuum frequently with a HEPA-filter vacuum. Avoid stain-resistant furniture and carpet treatments. Open windows when you can. Dust regularly with a damp cloth instead of dry dusting, which just pushes particles into the air.

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Source: Zhang Y, Liu K, Yang W, et al. (2026). Environ Pollut.