[patssle]

Originally Posted by motion

N100 seems to be the highest rating. Wonder if this is adequate?

3M Particulate Respirator 8233, N100: Amazon.com: Industrial & Scientific

As somebody in the air cleaning industry - that mask does not specify the filter type nor what micron level it filters down to.

I'm sure it filters a lot of the bad stuff out but can't say how well it would protect you. Ideally you want a HEPA filter respirator that filters down to .3 microns or so.