I almost think they smell like burnt hair and used motor oil. I dont have any of my own yet but I work a sale every month that sells around 750 goats and 100 sheep plus all the misc. (donkeys, llamas, ponys and whatever else shows up) It's a hard smell to discribe thats for sure.
Smells like money to me. Without those stinky bucks, there would be no cute babies, and without the cute babies, there would be no income to help pay the feed bills.