Just keep washing those hands. Norovirus isnt airborn. But dont be by him while he is vomiting. Its airborn from the "vomit" particles. If he gets it alot more than you, it pry just means he has a weaker immune system. Maybe you have a strong one. But i know what you mean. Im all by myself and i feel like tonight i might get sick for some reason. I always say that. But im really nauseous right now and scared i might =[