In my country ( nordics with mask mandates ) the single layer mask is explicitly forbidden and is scientifically proven be worse than no mask at all, as single

In my country ( nordics with mask mandates ) the single layer mask is explicitly forbidden and is scientifically proven be worse than no mask at all, as single layer cloth disperses droplets making spread worse. I would be kicked out of any store if I wore a single layer mask. In other countries the same scientific dogma states that single layer is not only allowed but even recommended as better than nothing. Sigh...