If you study the scientific literature for works that measure actual infections with/without masks (and not hypothetical scenarios on droplet travel distances)

If you study the scientific literature for works that measure actual infections with/without masks (and not hypothetical scenarios on droplet travel distances) you'll find that the science is far from being established. Take a look here just how many works indicate no effect: https://swprs.org/face-masks-evidence/ https://swprs.org/face-masks-evidence/ These may be cherry picked of course - no question there, still it is evidence that the science is not settled. For a "home-run" review see the Cochrane review: https://www.cochrane.org/CD006207/ARI_do-physical-measures-such-hand-washing-or-wearing-masks-stop-or-slow-down-spread-respiratory-viruses https://www.cochrane.org/CD006207/ARI_do-physical-measures-s... Not even N95/P2 respirators were found to be effective.