why do non symptomatic people have to wear the mask in the first place. A 2015 study basically proved that respiratory virus does not transmit from them that way. fecal mater, coughing and sneezing does. A mandatory hand wash station would be far more effective (they have some on the larger Cruise ships I have been on) stick your hands in for about 20 seconds and Wala clean again...people who are coughing or sneezing already they can wear them... leave the rest of us alone.