I can argue with that because of all the mask-abuse I see going on. Fine, you cough or sneeze or nose-drip into your mask. Then you hoik it down with your fingers when you come out of the shop. Then you hoik it back up with those same snotty fingers for your next shop. Those fingers go all over the trolley or basket handle. Then you use the same mask next day and the day after, because why would you pay another quid for a new mask when your used one looks, well, pretty good, and no-one will notice? Then you drop it on the pavement (ok, sidewalk). All this is maybe not what you do, but it's what a lot of people undeniably do.

You could well be better off with no polluted masks around. Can you argue with that?