Yeah enzymatic cleaner will cut out the animal smell. I use Stuart's and it works. The issue is when the motor gets hot the smell gets into the laquer of the windings, then when it cools, it impregnates the smell into the laquer. This is why you smell it every time you switch the vacuum back on, forever. The keratin oil in animal hairs and when it rots is what gives vacuums that wet dog smell that people that dont own dogs, don't like.
The desert heat likely pushed it probably 300F+ on the metal. I used to wash tube TV's I took out of the dumpster. I would hose them down with a garden hose and soap and theywould be drenched with water to get all the garbage juice off. Then leave them in the sun in summer for a week. They all worked after. But when you're dealing with motors it's too many nooks and crannies for water to hide, I wouldn't risk it. I have too many vacuums that cannot ever be found again to risk hurting the motors. That's why I've spent so long studying motor repairs and learning what they look like and function like.
