No, chinchillas do not smell. A healthy chinchilla is a clean, odorless pet. Any stench or strange odor coming from your chinchilla’s cage is likely due to a sick chinchilla or negligence in cage cleaning on the part of the owner.
...if you are unaware of proper care and maintenance for your chinchilla and do not pay attention to some warning signs, there are some conditions that could cause your chinchilla to start stinking.
Whether due to teeth growing into mouth tissue or food getting stuck in their teeth, dental problems can cause your chinchilla to have bad breath.
While chinchilla poop and chinchilla farts do not cause an odor, chinchilla pee does have a foul stench and, if left unattended, can cause the chinchilla’s cage to smell unpleasant.
Chinchillas are active creatures that need space to climb, scurry, and play, so you should plan your cage accordingly. They are crepuscular, meaning that they are most active at dawn and dusk.