fwiw: my household’s being hyper-vigilant regarding covid, rarely doing anything beyond social distancing. i'm looking for a study that validates the convention

fwiw: my household’s being hyper-vigilant regarding covid, rarely doing anything beyond social distancing. i'm looking for a study that validates the conventional wisdom about masking so that we know we aren’t contributing to the spread. at no point am i suggesting any behavior that isn’t backed by scientific data.