I stopped having "meatmares" about a year ago. I don't know if this counts, but I went vegan a few days ago and I had the strangest dream last night. I dreamed that a friend of mine went into business making chocolate bars, but he printed a nasty word on the wrapper for some reason. (It's what I call the "f-word", the one that's used against homosexuals). I was shocked and didn't know how to tell him I wouldn't buy his chocolate bars because I didn't want to see that word, even in jest. Then (in the dream), I realized they were milk chocolate, so I couldn't buy them anyway. It was a big relief.
Odd, though.
Anyway, when my friend stopped smoking, he had "smokemares" just like my meatmares. And when a friend of mine stopped running marathons due to time pressures, she had dreams where she was racing again. So I'd say it's just normal subconscious stuff.