Homemade masks to guard against viruses seems like a crazy idea, data shows masks work incredibly well, and they’re also really cheap. Surgical masks will cost a couple of pennies, and that they can filter 80% of particles right down to 0.007 microns (14 times smaller than the coronavirus).
However, the coronavirus outbreak brought with it a replacement problem: masks are sold out. People have scrambled to form their own masks, but can homemade masks really protect you from the coronavirus?
Scientists from the University of Cambridge asked this exact question within the aftermath of the 2009 H1N1 flu pandemic. They thought that during a global pandemic scenario, we’d run out of N95 masks. Their predictions have come true during the coronavirus outbreak.