I work with animals in a laboratory....we currently have a problem with something called mouse MHV, that makes our mice sick. We needed to confirm that our mice had this, and needed to send a poop sample to a vet school in another state. Our dear, dear animal tech carefully selected 10 mouse "pellets" from each of the 100 or so cages and carefully placed them in glass vials. He then packed these vials in wrapping and placed the whole thing on dry ice....and Fed Ex picked up the package for overnight delivery on the Thursday before Labor day......Tuesday we get a call from the vet school- no delivered mouse poop. So we begin to call the various numbers to track the (now packed in melted dry ice) poop sample. Pretty soon we get a call from the airport Fed Ex office wondering WHAT was in the package we had shipped. Turns out it was accidentally left on the tarmac until Tuesday morning (in 90 degree heat!).....they brought it into the hanger to track where it belonged and someone RAN OVER the package.........apparently the smell was, well, shall we say, overwhelming.
Needless to say, the package was ruined and our poor tech had to go through the whole process again- this time using another carrier. Not sure the poor Fed Ex people have EVER gotten the smell of rotting mouse poop out of their office! Serves them right for losing it!!!!