DIY Air Purifier Method Sweeps Social Media as Protection Against Wildfire Smoke

Social media users are sharing instructions for an inexpensive DIY air purifier to protect against wildfire smoke.
The method uses a box fan, four air filters, and duct tape to create a highly effective purifier that removes particles from the air.
Invented by Richard Corsi and Jim Rosenthal, the "Corsi-Rosenthal method" has gained popularity on social media.
The purifier costs under $100 to create and can remove smoke, pollen, and viruses from the air.
Instructions for the purifier are accessible online, allowing people to easily make their own.