If you cannot survive on 350 a week but insist on going to work then wear a mask if you feel at risk.Drivers have been wearing masks since mid March.It's not a big problem.
By the time the lads on 350 have come off their holidays in August, there's a good chance the numbers will have decreased significantly or be so low that they're insignificant.
By the way I've no intention of wearing a mask or putting a screen In my beautiful Prius.I won't be back until at least August.Longest Christmas holidays ever..