Well I'm no mask revolutionary. We have to wear masks in shops now and I comply meekly. But my opinion is that there is little evidence that masks do any good, and I see so much mask abuse (mask not covering the nose, mask on chin hoisted up at shop entrance, nose-itch relieved by scratching through the mask, mucho frontal mask-touching, mask used as a means of ditching social distancing, widespread mask-litter). And I have to wonder how many of those "disposable" masks, at a quid each, are worn five, ten or fifteen times before they get smelly enough to oblige their users to ditch them. I think there's a possibility that masks could often be doing more harm than good. And do note the caveats there, doubtfulness about one's opinion that I rarely see expressed by mask-zealots...