Indoor air can be more polluted than outside — 6 items to watch at home

Several low-cost daily habits are highlighted as effective: opening windows for as little as 5 to 10 minutes to flush out stale air, running exhaust fans in kitchens and bathrooms during cooking or showering, and maintaining indoor humidity between 30% and 50% — a range that limits mold growth without drying out airways. Banning indoor smoking is also cited as a significant measure, given the well-documented risks of secondhand smoke.

For households considering upgrades, the next practical step is a radon test — a quick check that can be completed within days using a kit from a hardware store. Broader questions remain open for researchers: long-term studies on the cumulative effects of low-level VOC exposure in residential settings are ongoing, and regulatory frameworks for indoor air quality in homes remain limited in many countries. Whether stricter labeling requirements for household products will follow is a policy debate still in early stages.