Trista,
I've fed my cats both wet and dry food and neither has caused foul smelling poo. The only cat I've had with that problem had a variety of health issues, including IBS and thyroid disease. I would make sure nothing else was going on in your cat's gut or endocrine system before assuming it was just a matter of diet.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher