It probably wouldn't work though. Say you wash your hands. Okay that helps some against certain diseases but not against respiratory disease, many types of foodborne illness, the plague, etc. You'd still get all of those just as easily as everyone else without also having a backdrop of the germ theory of disease to explain other ways to prevent disease and antibiotics to cure bacterial infections.
This is the state of biology in the middle ages. This is a medieval Scottish bestiary, a book of animals, which contains many interesting facts about animals such as beavers biting their testicles off to throw away pursuers, several animals spontaneously generating from nothing, and many animals that don't exist (my favorite is the Bonnacon, a bull that spews firey shit as a defense mechanism). Medieval scholars also didn't accept experimentation as a valid means of gaining knowledge - they were stuck on Plato's ideas about matter being flawed and untrustworthy and true knowledge only being able to come from Reason (and in the case of the medieval era, Divine revelation). Obviously you could show them bacteria (if you could somehow fashion a powerful enough microscope with medieval tech, which is not a trivial task) and they'd have to believe in it but how would you get them to believe that those little guys cause disease when that took us a couple hundred years in actual history?
Lmao hurt Trump? His cultists will be eating rat soup to survive and insist that the economy is great and America is on its way to being Great Again™, and that rat soup is just a necessary sacrifice on that path.