This is false you should stop repeating it. The public shouldn't horde masks but that doesn't make it ok to go around saying they don't work.
If you have to put yourself in a high risk situation like flying on a plane where you are going to be in a crowd where someone is potentially sick I would absolutely wear one. CDC's own guidance for preventing infections on commercial aircraft says as much.
If you have to put yourself in a high risk situation like flying on a plane where you are going to be in a crowd where someone is potentially sick I would absolutely wear one. CDC's own guidance for preventing infections on commercial aircraft says as much.
[0] https://www.cdc.gov/quarantine/air/managing-sick-travelers/c...