Conversation when opening the minivan door 2 days ago:
Me: "Do you smell that?"
Me: "It's like something rotten"
Matt: "It smells like citrus."
Me: "No, but it's definitely a fruit - is there a rotting apple core in the wastebasket?"
Matt: "No, I think it's a citrus smell."
Me: "What would be citrus in here?"
Yesterday we finally found the culprit. The fermenting remnants of an open bottle of apple juice in the back seat. Score one for me! I knew it was an apple.