Hi, Angie, I was going to say that smelly farts and gas are usually a sign of a food issue, but I'm not familiar with raw feeding, so don't know if that would be the cause. I'm sure some members who have experience with raw feeding will come along soon to give you some advice. The only thing I can think of is that it could still be an allergy to one of the Ingredients in his raw food? Do you buy his food ready made, or do you make your own raw? He could have an allergy or sensitivity to one of the proteins such as chicken or salmon. A lot of bullies have this. You could also try to add some plain unsweetened yogurt to his food to give him the probiotics, this is excellent for digestion, and it boosts the immune system. You can also add 1 Tbsp of apple cider vinegar to his drinking water everyday, there are a lot of health benefits to ACV, there is an article on the benefits of ACV on the Home Forum that you can read.