Rules have exceptions, if somebody is in business of providing food, of course there are expectations and rules. When you go out in the street or to a pub, the

Rules have exceptions, if somebody is in business of providing food, of course there are expectations and rules. When you go out in the street or to a pub, there is no expectation and no rule that everybody is completely sterile. Your health is primarily your responsibility, not other random people's you may encounter.