If its food bears can smell it and know it is there. You need to protect your food no matter what. That being said they do seem more interested in salami, fish, and bacon. I still bring it, though I just make sure to protect it (and the trash afterward). I have a friend who prefer to save the tuna packets for the end of the trip and even without bears there is something to be said for not walking around with smelly, rotting fish packets.