Social media users are sharing a surprisingly effective way to protect yourself indoors from the toxic wildfire smoke blanketing much of the East Coast: a box fan, four air filters and a whole lot of duct tape.
As searches for "air purifiers" spike on Google, people are posting on TikTok and Facebook about how to build the DIY air purifier. The technique, known as the Corsi-Rosenthal method, has gained attention in recent years amid the pandemic and raging western U.S. wildfires.
"It works extremely well and will save your life with really smoky days," she says in the video. "It does a lot better than the normal air filters." "I can confidently say this thing is working really well today," she said. "I was able to filter out all the particles in the air basically back down to what I saw last week within a matter of minutes."
Grace Turner, 31, built her box fan purifier for her home in Rochester, New York, after picking up the trick from living in Salt Lake City. She shared her DIY box on TikTok where she said the air purifier has made a difference in her home.
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