I was away last week(not bragging) and the Airport staff in Prague airport refused entry with the cheapo blue masks most people use.Instead they directed me towards a vending machine to buy a more expensive respirator pf2 mask.Only a euro but deffo better in their construction.
What I'm saying is if you're genuinely concerned about catching or spreading it buy some better masks.I'm at the stage where I've stopped caring but wear a mask to keep others happy.