You can find a meta-analysis to prove anything you want.
It is an extraordinary claim that wearing a mask properly does not reduce transmission of viral particles. You'll need to come up with a physical basis for this unintuitive hypothesis if you want to be taken seriously. Then you can point to studies whose results are explained by that hypothesis.
It is an extraordinary claim that wearing a mask properly does not reduce transmission of viral particles. You'll need to come up with a physical basis for this unintuitive hypothesis if you want to be taken seriously. Then you can point to studies whose results are explained by that hypothesis.