Nothing like coming home from an overseas trip to find that your garage fridge/freezer got fried by a thunderstorm. The smell of rotting meat was something I wish never to experience again.
I once came home to a kitchen fridge seemingly running fine, only to be greeted with a blast of hot air when I opened the door. This was nearly 20 years ago, and the smell of the leftover lobster claws I had in there remains a topic of conversation to this day.