Scandinavia and the World

Comments #9847917:

Masked Sarcasm 6 11, 11:25pm

@Cris So the argument is that it creates a high concentration of the virus, meaning it's catching the virus, while also not catching the virus?

MinutePhysics has a nice video on how N95 masks work, and why they do catch and hold viruses. The TL;DR version is that masks don't just work like a filter or sieve that block larger particles but let smaller particles through. They work using sub-atomic forces to attract and hold small particles like viruses, while also working like a sieve to trap larger particles. The problem is the in-between size particles, and the "95" in "N95" means the mask is rated to catch 95% of those particles.