Originally posted by ForensicPath
I have participated in over 200 autopsies. I volunteered as an autopsy assistant (diener) this past summer at my local medical examiner. Yes, I have seen/participated in an autopsy on a decomposing body (a whole bunch as a matter of fact). It is by far the worst and most unforgettable smell you will ever come across in your entire life. Decomps can be characterized by a few things: green, skin sloughage, juicy, and incredible smell.
The mangled bodies were not really as bad as expected. I've seen the results of car accidents, man getting hit by train, shotgun homicide/suicides, stabbings (one case where the guy was stabbed over 100 times), burns (seriously smells and looks like chicken that has been left on the grill for too long, especially when they are crispy), as well as drug ODs and natural deaths. We actually had one case in which the murder victim was decapitated, hands and feet were removed, and were never found. The body was in an advanced state of decomposition with plenty of maggot activity.
I have also seen and smelled gangrene when I worked in an ER. Basically a homeless guy did not take care of his leg and there were maggots living on it. Smells like a decomp, but on a smaller scale.
Someone mentioned the incredible organ known as the brain. Of all the things I was able to do and was exposed to, being able to remove and hold the brain was easily the coolest thing that I have ever done. The first time I did it, I was in awe that something that I can hold in my hands and weighs around 1400g (normally) can be so intricate and powerful. We haven't even scratched the surface of understanding the brain.
P.S. If you are ever going to watch an autopsy, don't be a wus and use vicks vaporub or wintergreen oil. Just suck it up and deal with the smell. It will toughen you up.