I am looking for the title of a book from my childhood. I was born in 1982. The book might be a Bugs Bunny book where he moves to a new house and doesn’t realize the house already has someone living there; a ghost. The ghost tries everything to scare Bugs Bunny away. He rattles chains, he moans, nothing works. Finally late one night the ghost and Bugs have an encounter and somehow Bugs spills juice on the ghost. Now the ghost is really depressed, can’t get rid of Bugs and has a stain. So Bugs washes the ghosts sheet and accidentally shrinks him to a tiny ghost. Distraught and embarrassed the ghost and Bugs work through their problems and end up sharing the house as friends.
Side note: it might not be Bugs Bunny, it might be the Pink Panther. I can’t remember!