These Do-It-Yourself Air Purifiers effectively reduce air pollution – and even viruses like COVID-19

The Corsi-Rosenthal Box is a homemade air cleaning system that is more effective than HEPA air cleaners. It can help reduce indoor exposure to airborne particles that contain the virus that causes COVID-19. It can also reduce the levels of other particles in the air, such as dust or wildfire smoke. These filters are being used in homes and schools and can be an affordable temporary solution for a variety of settings and break rooms. I've tested this cleaning system in a residential kitchen—watch the video!