I was at my parents' place for a BBQ yesterday. They have a pretty new house and nice, new appliances (no more than 4-5 years old). I got some ice from their fridge, the automatic dispenser type, and while it melted in my drink, my Dr. Pepper began to taste like a mix of hot dogs, frozen burritos, fish sticks, and old Chinese food. I've encountered this phenomenon and friends' houses too. What is up with that?