The smell will adventually faid. Really not much you can do. But dont worry because it isnt toxic.As long as he was traviling at night he was healthy and not sick with rabies.Animals that are infected with rabies will change up there ruteen and skunks are nocturnal animals. You can call your vet and get a recipe for a bath to give your animals when they are spraied.But as far as your house goes it will take some days just burn some candles.