in

N95 Masks With Exhalation Valves Don’t Slow The Spread Of Covid-19

A new video shows how the N95 masks with an exhalation valve doesn’t actually stop droplets that spread Covid-19.

Source: N95 Masks With Exhalation Valves Don’t Slow The Spread Of Covid-19

What do you think?

Written by aggregation

48 Of The Best Gifts For All The Guys In Your Life

Elon Musk Tests Positive For Covid-19 (And Negative)