You could always wear a proper mask - I mean, the ones in hospitals which are 100% effective v Covid. Then it doesn't matter if others are not.
No mask is 100% effective against Covid. Hospitals use N95 respirator masks which are 95% effective (as the name suggests). To get close to 100% you would need something like a hazmat suit and your own air supply.
The principle of mask wearing is to protect *other people* rather than protecting yourself. A simple analogy is this:-
Imagine you are naked. You meet another man who is naked. You are standing less than 2m apart. He is weeing at high pressure. You are getting covered in his wee. Yuck.
Now repeat the scenario, but you are wearing trousers. Your legs are no longer getting covered by wee as much, but your trousers are getting wet and some of it is soaking through to your legs. Still yuck.
Now repeat the scenario, but the other guy is wearing trousers. He's just a guy with wet trousers and you don't care because your trousers and legs are no longer affected by his incontinence. It's more important that he wears trousers than you. Unless you are also weeing.
Same applies to masks.
CNN understand where Boris is at:
View: https://twitter.com/ThatTimWalker/status/1412317095719837698?s=20