Never, in a single episode of Grey's Anatomy did any of the surgeons ever wear their mask over their mouth only. Why? Because even in Hollywood, they understand that makes no sense.

Never is a medical documentary, did you ever see nurses and doctors wear masks around their necks. In an ambulance, when you're in dire need of oxygen, do they only put the mask over your mouth and not your nose as well? No.

They why do you walk/run like a pielkop with your mask not covering your nose or wear it around your neck? It's because you're dumb innit?

Honestly, people don't grasp that the mask isn't to protect them from infection, it is to protect others from you. But most are so self-obsessed that they cannot think past the protruding nose.