Anyone know if this is correct

Generally speaking I think that is about right, no idea if the photos are real or not.

The explanation usually given is that it protects from viruses that are in the various droplets of moisture that are exhaled in every breath and more obvious droplets from snuffling or sneezing.

Whether or not you think that they are effective or not is probably up to you.
 
Masks are a waste of time. Don't need any images to prove that.

If you wash your hands regularly, don't touch your face all the time and don't like people cough and sneeze on you - you should be OK.

Until you die.
 
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