Is smoke in your home? Here's how to make an air purifier using a box fan

Smoke from wildfires in Canada and Minnesota is sending air quality indexes to record levels, posing a hazard for millions of people. Here are tips for how to breathe easier in your home.

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What happened: Smoke from wildfires in Canada and Minnesota is sending air quality indexes to record levels, posing a hazard for millions of people. Here are tips for how to breathe easier in your home.

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Source attribution: NPR News via npr.org. Original report: https://www.npr.org/2026/07/17/g-s1-134179/is-smoke-in-your-home-heres-how-to-make-an-air-purifier-using-a-box-fan