Video compares droplet sprays when wearing different masks — and no mask at all https://t.co/ytuVPmQrlf via [Twitter](https://twitter.com/SJenkins/status/1292069856561504256)
Video compares droplet sprays when wearing different masks — and no mask at all https://t.co/ytuVPmQrlf
— Steve Jenkins (@SJenkins) August 8, 2020
Leave a Reply