This is basically what I'm doing with a box of FFP3 masks I bought years ago and partly used. I only need to go out once or twice a week at most, so I can rotat

This is basically what I'm doing with a box of FFP3 masks I bought years ago and partly used. I only need to go out once or twice a week at most, so I can rotate through them and give each mask a good ~14 day rest.