It won't take a genius to work out that I'm completely opposed to masks.
Leaving that aside, it's all very well saying that they need to be taken off in such-and-such a way, with clean hands, then disposed of in such-and-such a way, with further hand-washing, blah, blah blah.
In real life, people are putting them on their heads, on their beards, on their chins, then slipping them back onto their mouths and noses when they go in shops. I have seen people drop them on the floor, then put them back on. The people I have seen in real life are not adhering to anything other than the requirement to cover their faces in shops.
I detest the whole business, but I'd say social distancing was a better bet than a mask.
And why do you need a mask in a shop, where you don't really encounter strangers at close quarters, but you don't need one in a pub, where people are unlikely to be so scrupulous about keeping their distance?
The whole thing is bonkers at best.