N95 masks will protect you from infection...95% of the time, if used properly. Almost all other types of masks do more to protect others from you. They will reduce the spread of the droplets released when you cough, sneeze or speak. A SARS virus is 50 nanometers. A nanometer is a thousand times smaller than a micron.
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Humility is not thinking less of yourself, its thinking of yourself less.
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