The SARS-CoV-2 virus is large as viruses go…
This mask claims to filter to 0.3 microns. Can you imagine the effort to inhale and exhale through that? The N95 is already work if fitted properly…
If this new mask is like the N95 masks, they will actually be even more effective against smaller particles. Essentially, a static charge attracts the smaller particles to the fibers, which they cling to.
https://rk.md/2020/how-do-n95-masks-work/