Micro biologist demonstrates just how effective masks can be

June 30, 2020 Joe Brady

For this demonstration, Dr. Davis held agar cultures near his face and sneezed, sang, talked, and coughed at them. For one set, he wore a standard surgical mask, and for the other, he wore no mask.

Check out the video on the masking debate. We are officially living in a Parks and Rec episode.
https://www.buzzfeed.com/andyneuenschwander/microbiologist-mask-bacteria-demonstration