“Please accept this harness and muzzle with good grace. We really don’t want to hear any complaints.”
Now as far as masks and viruses - this metaphor might be helpful:
If you think of a mask as a chain link fence, then the virus is like a FLEA. So how can a chain link fence stop a tiny flea?
Because viruses, like fleas, do not travel through the air on their own. They need a delivery "vector".
Viruses travel on droplets of water that you exhale, and each droplet may contain tens of thousands of viruses. And those droplets are many orders of magnitude larger than the virus.
So - the "chain link fence" (aka mask) is NOT there to stop the "Flea" (aka virus).
The "Chain link fence" is there to stop THE DOG that is CARRYING the Flea.
Any questions? ;>)