I'm sure six months of decomposition, even in an enclosed, low-humidity space, will have the bodies reduced to dry skeletons. By then, would you still have the classic dead body stench that sends characters recoiling? Or would it be more of a subtly putrid odor characterized by specific components of the smell?
Imagine a factory floor-sized space, enclosed, in a desert environment with 3 to five bodies. Heat is the kind of warm that would have you breaking a slight sweat walking around the block but not enough to leave you drenched. Almost zero humidity.
We're talking on full-on skeletons right? What would the smell be like?