See https://www.cdc.gov/coronavirus/2019-ncov/about/transmission.html https://www.cdc.gov/coronavirus/2019-ncov/about/transmission... "Most often, spread from

See https://www.cdc.gov/coronavirus/2019-ncov/about/transmission.html https://www.cdc.gov/coronavirus/2019-ncov/about/transmission... "Most often, spread from person-to-person happens among close contacts (about 6 feet). Person-to-person spread is thought to occur mainly via respiratory droplets produced when an infected person coughs or sneezes, similar to how influenza and other respiratory pathogens spread." https://www.cdph.ca.gov/Programs/EPO/Pages/Wildfire%20Pages/N95-Respirators-FAQs.aspx https://www.cdph.ca.gov/Programs/EPO/Pages/Wildfire%20Pages/... "An N95 respirator is particularly effective against aerosolized droplets that are invisible to the naked eye."