Armadillo's are covered with a virus which causes Leprosy. Picking one up can be a "death sentence". A few years ago, a neighbors dog was "playing" with one, and after the neighbor "petted" his dog, he got infected with Leprosy. He had to have the dog "put down" and spent months recovering, and still has to take a bunch of drugs to combat the damage it did.
If I kill one, I pick it up with a big pair of pliers, toss it into my burn pit, cover it with dead branches and diesel fuel, and Cremate it....then sanitize the pliers with bleach.