My friend, who works in an Amazon warehouse, agrees with you. He advised me to never buy food or personal items from Amazon because the warehouse is heavily infested with rats and most items therefore end up coming into contact with rat waste.
All the food and personal items I buy come bagged and sealed.
This feels like a non-issue, no more than knowing that the book I ordered was next to a rat at one point, which could happen in the storage area of any book shop anywhere.
