Think of plastic like a grumpy sponge. It wants to swap flavors with you. Heat makes it faster. Leave a bottle in a hot car, and that water might taste like a melted Transformer.
Even worse: tiny bits of plastic called microplastics can break off. You’re not just drinking water anymore. You’re sipping a future museum exhibit of your own convenience.
But here’s the kicker: the water itself doesn’t rot. It just gets boring and a little icky.
The “Forgotten Bottle” Experiment
In 2014, a guy actually drank a 50-year-old bottle of water. It looked fine. It tasted… flat. Like licking a dusty rock.
Why? Because water absorbs carbon dioxide from the air over time. This turns it slightly acidic. Not harmful, but definitely not crisp.
So your old car bottle? It might taste like sad, stale air. But it won’t kill you. Probably.
