I don't know the context, but if you are looking for guarantees in life, then there is no possible way for you to accept any foreign material inside your home. I work in biotech(vaccines) and we have special protocols for disinfecting our incoming materials that go into cleanrooms. They are typically tripple-bagged from the vendor. And even then, there is no guarantee that something wont slip in. Its rare but it happens. If you do any kind of environmental monitoring in your home, and you will be surprised at the amount of bugs that you are currently sharing space with. Coronavirus is the new flavor of the month.