Anyone with even the slightest knowledge of virology knows that NO mask gives a benefit.Information during a fast moving pandemic changes quickly. That's just life. Eventually, guidance is altered. The medical staff I saw in a hospital recently wore face hugging N95 masks.
When I do wear them, I put a nice blue cloth mask (with a small American flag) over the N95 or KN95 because I don't want to look like a doctor, or a drywaller.
Scientists working in virology labs are ensconced in a pressurized suit so that if there is a hole, air can only go OUT, and even with that, they still get sick.
Viruses are so small that most are not visible with a normal microscope. Yet you idiots just believed whatever your masters told you to believe.