Yeah, when you say any kind of masks works, you will get someone comes in and say: WHO says masks are not effective. Also, do you have source that says masks w

Yeah, when you say any kind of masks works, you will get someone comes in and say: WHO says masks are not effective. Also, do you have source that says masks work? I actually don't know how to reply to that. Fortunately, Cambridge published a research about DIY mask against influenza. Then, that person will say that's not covid. They aren't the same thing. Science wins, I guess. We cant say masks work without scientific research backing it up.