Micron sized should be fine, and they’re going to form a. God phase when hydrated so you don’t have to worry about long-term friability. Nanoscale would be a co

Micron sized should be fine, and they’re going to form a. God phase when hydrated so you don’t have to worry about long-term friability. Nanoscale would be a concern because of the ability to directly enter cells, but micron would be fine unless you’re breathing a cloud of the stuff when it’s fresh ad dry. Under normal wear and tear that won’t happen.