Grinding/Particulate Masks??

When I started my project 8 years ago, I started tearing things apart "just like on TV". after the 1st or 2nd day, my lungs were hurting and I realized I needed masks. Of course then (pre-covid), you could easily find them. I went through a couple boxes over the entire project. The 3M N95 masks I think from Home Depot. I basically used each until the elastic was worn out or they were extremely filthy, as long as the inside looked clean. Probably should change them out a little more often,
But I won't even go out and cut a piece of steel or trim down a bolt without a mask & face shield now, waking up with **** in the corners of your eye that feels like steel wool isn't cool either. Even if its directed away from you, That stuff flies around everywhere, especially in a closed garage. I take stuff ouside as much as I can as well.