MSNBC The 11th Hour January 15, 2022 04:48:00
A lot of it is will you keep the mask on. it only gives you that protection if you can keep it on. now we do have a lot of options on the market. there are many different fits, and i urge people to check out project n95.org that does provide a huge range of these validated, certified n95s and kn95s. the other thing i want to throw out there is you want to make sure the masks have good seals so that theres no air going out from around them and they dont have insulation valves where so on youre no...
Source: archive.org