Yep, like a mosquito being barred entry by a chain link fence. Dr. Drew Pinsky who is against lockdowns but in favor of masking caught Covid -- at a hospital when he went to get the vaccine and was denied -- and he's a stickler about wearing masks and having everyone around him properly wearing. And even with all that precaution and his OCD tendencies mixed with proper medical sanitary procedures, he still caught Covid. Seems to me like that is the definitive case to prove that the masks simply DO.NOT.DO.SHIT.