I just ate a bowl of cinnamon yogurt. Perrine wandered over to where I had set the bowl down, sniffed it, and made the "this is crap" sign. "Shut up, cat. I don't need your opinion because I didn't put that there for you. We already know we have different diets. And yeah, it smells like spoiled milk; it's yogurt, it is carefully-pre-spoled milk (like cheese, which you do eat sometimes), it's supposed to smell like that. Silly beast."
(I've known other cats who loved yogurt, and looked adorable reaching into empty single-serving yogurt cups to scrape the last bits off the sides with their paws and lick them. So far, Perrine doesn't seem to like yogurt with or without cinnamon.)