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Gas Stove Emissions Explained: What NO₂ and PM2.5 Mean for Kitchen Air

Cooking on a gas stove releases two invisible pollutants—nitrogen dioxide (NO₂) and fine particulate matter (PM2.5)—that build up in your kitchen and drift through the rest of your home. This guide explains where the emissions come from, what recent U.S. research says about safe levels, and the single most effective way to cut your exposure: a powerful range hood vented outdoors, used every time you cook.