My cat's poop is very stinky?

My cat experience is that fish flavoured food and treats tend to make the poop smell terrible. Try smell absorbing liners, maybe a lid, if it doesn't go away. We use Litter Maid. Its a automatic pooper scooper thing. It helps a lot, its in our living room and you cant smell a thing. But it still smells when you empty it of course. We tried switching foods, but our cat will only eat meow mix for some odd reason. And ever since we stopped feeding him seafood treats and food he has smelled alot more decent.