You'll need to tilt it or remove the back or pop the top to see where the leak is coming from. Unplug it first. I had my water pump crack and leaked. It was a plastic part not related to freezing though, and it only leaked when it ran a cycle. Perhaps your leak is prior to the water pump.
Was the burning a burned rubber smell? Maybe its your belt. either off track or worn down and motor is spinning but the belt is not turning. Just something to check.