I think "completely useless in social settings" is over-egging it.

Lancet: "Data are accumulating that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes COVID-19, is transmitted by both small and large particle aerosols."

https://www.thelancet.com/journals/lanres/article/PIIS2213-2600(20)30323-4/fulltext