Wet food = stinky kitten breath/poo?

I am currently feeding my 6 wk old kitten Science Diet Kitten canned food. He's so tiny that he can't chew dry food yet (the kibbles are too big even in the kitten food)

Well his breath and his stools are very stinky. Can this be caused by the wet food? What type of food would you recommend? (commercially available please) Will switching to dry (when he's ready) help?

Thanks!