This right here!
I've read that lots of times and thought, "How bad can it be? If you've ever stood by a garbage dumpster in Kansas in July or cleaned up toddler barf after a big lunch, certainly you can handle a stupid half-digested rat. I mean, what's worse than human barf smell?"
I had my first one the other day. It smells like....something died and then sat in the belly of something else for (six days in my case) on top of a 90* heating pad.
I'm not the most experienced person here by a long shot, but I can tell you this - if it ever happens, you will know it happened. Mark my words, you will know.