I have 2 cats, and they eat the same foods, both dry and wet, the one does not have much smell to her "smellies", however, the other one would knock over a hearty sailor. Oh yes, the smelly is usually never covered. Therefore when I get a wiff I clean it up right away otherwise it spreads through out the house.
I think it is the same with humans, some have much more smell than others when in the bathroom.
Be sure you read all the ingredients on the labels and make sure your kitty gets the best, not the cheapest. You don't want a lot of filler, and stuff they do not need.
have fun with your kitty