@SamOfTheBeargrass @Johncdvorak In theory (if transmission was a random 5% probability) it would make it an N99.75.( 1 - 0.05 * 0.05 ) * 100In practice, it might be a bit like wearing two condoms, the rubbing could break both of them.
Yesterday, while shopping in Berkeley, some fat and old Berkeley fart is staggering around the street (in open air) double masked with TWO N-95's! Wow.Check the calendar.