I have noticed that home processed meat smells different from storebought meat. Storebought meat smells like...well, I guess raw meat. When we have butchered a cow (18 month heifer) and goats (yearling wethers or bucks), even after careful butchering, salting, and rinsing of the meat, it smells like a dead animal, it reminded me of the necropsy lab when I was in college. With the beef, it even smells different after being frozen and then thawed to eat, it still has a slight lingering odor of dead cow. After cooking, it smells and tastes wonderful though. The rooster we butchered a couple of months ago smelled like wet feathers and had a bit of an off taste even after cooking, but I expect that with older rooster.