If 1 sells a face mask the person has to have attended a mask fitting course. DH was in H&S and responsible for mask fitting
......
I would worry about 15 mins., surely if the surface it's wiped regularly the Germ mutates
[a bit like slime ..........
]
Photo released this morning shows a coach driver in day clothes with a fully protected passenger, the seats behind appear empty. Now I would insist on barrier clothing as a driver