That mask uses UVA which doesn't kill germs. Only the horrifyingly dangerous UVC kills germs. Don't even think about making a DIY UVC device. You could blind

That mask uses UVA which doesn't kill germs. Only the horrifyingly dangerous UVC kills germs. Don't even think about making a DIY UVC device. You could blind yourself in seconds. https://www.bbc.com/future/article/20200327-can-you-kill-coronavirus-with-uv-light https://www.bbc.com/future/article/20200327-can-you-kill-cor...