You’re…you’re talking about poop right?
Funny fact: The human body does not distinguish between energy sources, nor does it differentiate between the different types of meat the owner ingests. Even if the meat ingested is of the same species. And, believe it or not, nothing supernatural happens and you don’t become a crazed, evil psychopath having consumed the meat of your own species. Remember that story of that soccer team (football to some of you) that their plane crashed in the Andes, and they had to resort to eating their dead teammates in order to survive until they got rescued? As far as I know, none of them turned evil or had supernatural abilities after that.
Then, there are the Vietnam stories. This isn’t regarding cannibalism, but rather regarding…what comes out after you digest. Yes, your waste products. Some of the guys who used to go out on stealth (or stealth-ish) missions would hold their solid waste as long as they could, and if they couldn’t would put it in a sealable container as the smell of their solid waste would be different than the other soldiers because of a difference in diet. They could smell the Vietcong by their waste, and if they didn’t seal their waste up, the Vietcong could smell them by theirs.
So… yes, ‘the digestion of their system will release foul scent which is unnatural’ in that, it will smell different than it would if they ate the same things as you and your group.
As to the scents given off by sweat, I can only think of three different things that cause abnormal smelling sweat. Diabetes - giving off a sugary sweet smelling aroma, having consumed alcohol - essentially smelling like a brewery…because that is kind of what is happening inside your body, and by virtue of homeostasis, it is attempting to get rid of the alcohol inside your body. And the third would be a medical malady such as cancer. Though that is a general scent rather than one only given off by sweating, but can be more pronounced when sweating.
And…uhh…oh its Eric Knight I’m replying to… oops. I forget that my friend rarely is serious. So uhh… never mind my entire wall of text please!