Like I said. There are many conflicting reports on both sides. Here is one I read:
In 2013 a review of the use of cloth masks for infection control (2)
again came to the conclusion that some cloth masks may reduce transmission of
respiratory aerosols, but their efficacy is unproven in the absence of randomised
control trials (RCT). ...
World Health Organization, June 5 2020. (12).
“Many countries have recommended the use of fabric masks/face coverings for the
general public. At the present time, the widespread use of masks by healthy people in
the community setting is not yet supported by high quality or direct scientific evidence
and there are potential benefits and harms to consider.