There are dozens of ways to deal with the animals killed in hunting. But I know only of a few of the legitimate ones, not the methods used to hide a hideous crime, but you could guess it would be similar = animal/human body.
In my experience hunters who are camped out and wanted to hunt for a few days would clean their deer, maybe put some muslin around it to keep off flies, then string it way up in a tree many yards from the tent. Someday I will tell you about the time we did that, but the grizzly got it anyway. But a lot of people just go day hunting and bring their prey back to their truck. I'm sorry, there are lots of ways to make a harvested deer lighter before hiking out with it. So many people on this board know more about cadaverine than I do. But, remember, if a person wanted to kill someone and move that body far away before dealing with it, they could in effect move a live body that has been demobilized one way or another, ie would not smell unusual.
One thing I would like to know, if a person had a leakproof plastic tote in the back of their pickup or truck, and if that tote had a dead body in it, could there be scent for the dogs if the whole container was moved out of the pickup within a couple hours of being placed there. Anyway, disposing of her via dismemberment would be my guess. Look at the Vanessa Guillen case, cement, dismemberment, and being discovered seemingly through carelessness of the alleged murderer.