I don't suppose it's occurred to you that Ardnt's reports of smell may in fact be her own horrified imagination or a misinterpretation of musty basement odor on the body?
Jonet Benet could not have been dead more than 8-12 hours (from the time she was last seen until she was discovered missing) yet putrefaction and odor development takes 24-36 hours depending on conditions.
Seems pretty clear that when you have contridictory information it might be better to consider if the information on putrefaction odor by the officer might not be overstated.
In considering all the scientific clues of "normal times" for things, you always have to take into consideration that she was a tiny 6-year-old who only weighed 45 pounds.
I read that Jon Benet was still in Rigor when John Ramsey brought her up. Do you know what the time frame is on that?