https://upload.wikimedia.org/wikipedia/commons/7/77/Sneeze.JPG
Virus is known to spread by way of the aerosolized droplets that are expelled into the environment while coughing, sneezing and even just talking. Mask deniers claim masks don't work so here is a couple of easy tests anyone can do to find out if that is accurate.
Stand a few inches from a clean mirror, take a regular kitchen paper towel, hold it over your face as if it was surgical mask. Now get a mouth full of saliva and yell Atttchooooooo to simulate a sneeze or cough. Did any saliva droplets penetrate the paper towel and get onto the mirror?
Now do the same test again this time without the paper towel. Yell atttcchooo and notice the obvious spray of saliva droplets all over your mirror. If you were infected, any of those droplets could infect someone else and even kill them and THAT is the difference between wearing a mask and not wearing one and even just a paper towel demonstrated it.
You can repeat the test with an actual aerosol can of spray. If you spray it in the air in front of a bright sunny window you can see how the aerosol floats off into the room. Now test your paper towel mask in front of the mirror like before, but this time with the aerosol can. Hold the paper towel an inch or so in front of the can and spray it at the mirror. Did any of the aerosol pass through and mark the mirror?
These simple experiments show the extent to which a simple paper towel mask can massively cut the amount of virus carrying, aerosolized droplets that enter the environment. Obviously a real surgical mask will be much more efficient than the paper towel because it has several layers and lasts much longer.
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