Yea something smells here more than the body.. It would have to be a recent burial{less than 12 months}. I've opened the same grave a body was buried in before a few times one was within about 6 months or so. No noted odor. It was in a National Cemetry and the vet and spouse are burried in the same grave. There were one or two cases where we dug the origional grave and the spouse or vets grave a foot or so above the first to die a few months later.
Exzumng a grave is quite noticeable the dirt being disturbed will be very notable unless the one doing so knows about sodding the grave. Even then you can tell ground has been disturbed.