If you can smell smoke through your mask, it won't stop a virus.
If you want to stop the virus you must look like this, BSL level 3 or 4. I think they use
fresh air systems for BSL 4. Pressurized hood.
Mask are used for splash prevention in hospitals. Splash and large droplets. That's it.
Don't use them as a virtue signal. If infected use nasal spray and gargle to stop the virus. It's a fucking war in your nose and throat.