Raw food typically has little to no odor. It takes them awhile to get used to it, especially the pre-mades. Have you tried warming it? Not cooking obviously, but put it in a ziploc baggy and float it in hot water so that it comes to room temp or a little warmer. Then smash with a fork and sprinkle a tiny bit of garlic powder or parmesan cheese. I bet that will entice him to get going on it. 
Good luck! Keep us posted!
Good luck! Keep us posted!