[pmoriarty]

"Note that "N95" masks are only 95% effective against viruses (even if you did everything correctly)."

There are masks that offer greater protection than N95. Among them are N99, N100, and various others. There's a good article that discusses some of the differences here: [1]

"N95 masks are disposable. One-time use"

Some types of N95 masks are disposable, others are reusable. Also, even the disposable kind could be (and have been) reused. This is, for example, widely done in hospitals where there's a short supply of masks, on the theory that some protection (even if imperfect) is better than no protection.

[1] - https://fastlifehacks.com/n95-vs-ffp/