Maybe not a mouse fuzzy, but I'm sure if a fuzzy got scared and was bred from aggressive parents, it could bite. Maybe it wouldn't do any harm, but better safe than sorry, I think.
Rodents are scared most ot the time if their not pets just from the air moving.
Fuzzy rats or mice CAN NOT harm a snake even if it tried sucking/biting the snake looking for a teet, just wont happen.