Hi there n WELCOME!!!
A lot of us feeds our dogs raw n I know my 2 don’t have a rotten body smell either. Human grade is NOT going to be balanced out like the ones you buy made for dogs. It’s a ratio of meat, organs, blood, bone, muscles etc. your dog might be adjusting to the food as raw is loaded with natural probiotics. His gut flora is probably cleaning up inside.
What brand are you buying?