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That's the point of the facemasks, to protect others. That's been known since the beginning. You wear a facemask to protect others from yourself, and in turn others wear facemasks to protect you and others themselves. Then you have a holes who are inconsiderate.
Right, viral airborne particles flouting around are capable to infect a huge number of people. If everyone has seen the results of the experiment carried out by Rich Davis, the the question of whether there is a need to buy a mask would have been cleared by itself.
I think the context of my post is not hard to comprehend for people with common intelegence. If you carefully read it you would noticed both inside text and picture promote wearing mask. It helps you and your surroundings. Take care of yourself, Kong Hey Pakboy