Very good idea for those things you need to go out for (like groceries) though. And as the OP says, if it came from the top that everyone should be doing this,

Very good idea for those things you need to go out for (like groceries) though. And as the OP says, if it came from the top that everyone should be doing this, using homemade masks if necessary, the social norm could be turned around overnight, just like it was with social distancing.