1. Masks are not especially useful. There’s little serious evidence backing the idea that they are.
2. Under some conditions they might better than nothing. Those conditions are however somewhat limited to certain indoor spaces, a certain amount of physical distance with ventilation and casual contact. Wearing a mask with the people you live with is really not going to accomplish anything.
Two Florida mayors who govern Miami and Miami-Dade County encouraged their residents on Thursday to wear masks inside to lower the transmission rate of COVID-19 between family members.
Miami Mayor Francis Suarez (R) explained that while the city’s number of daily new cases is down, the virus is still being spread easily through households, as multigenerational households are commonplace in Miami.
“I would tell our residents — and this is voluntary, this is not something that we can mandate — that they should consider, particularly if they have a multigenerational household, wearing masks indoors at times with their multigenerational residents and also respecting social distance when they’re at home,” Suarez told reporters.
Multigenerational households have been a possible vector, but, realistically speaking, wearing a mask is not going to change the reality of sharing a home with someone. Especially if there are common bathrooms, food supplies, dishes, or a sink.
Mask wearing has become a cult with little scientific basis and less common sense to its practices.