So whatever test youre thinking about . . . do the test correctly.
No, not really
Why Masks Don't Work - "Careful Consideration Of Our Common Concerns" - Dr. Ted Noel
https://www.youtube.com/watch?v=3MKzKAzKCNk
Don’t quite know what the point is. That video showed the mask clearly often stopping 90+% of the aerosol and forcing it out the sides. That will clearly reduce distance forward for exhale and inhale will be through the mask, smaller molecules that can get through the mask aperatures.
So . . . I don’t get the point. The masks on that guy obviously worked. Very little went through the mask. It was all out the sides.