More like a submarine using thermocline to lessen sonar detection. Not foolproof, but it helps.
If you spent years of research on how air flow and electrostatic attraction worked you would know how bigger holes can filter smaller particles. Fortunately, you don't have to do this as companies have been doing this for many years. All you have to do is use your favorite search engine and look it up.
Like a screen door on a submarine.
I actually considered making a mask out of window screening to wear around, but I was too lazy and just didn't actually care about it.
More like a submarine using thermocline to lessen sonar detection. Not foolproof, but it helps.
If you spent years of research on how air flow and electrostatic attraction worked you would know how bigger holes can filter smaller particles. Fortunately, you don't have to do this as companies have been doing this for many years. All you have to do is use your favorite search engine and look it up.
It's there.