I found a water bottle next to the kitchen sink yesterday. It looked discolored, so I dumped it out, not knowing what it was. Based on the smell, I think it was Listerine. Does anyone have any idea why she would have Listerine in a water bottle or if it could have been something else? I thought maybe to cover the smell of alcohol, but they why not just leave it in the original bottle? She often drinks vodka, which I'm told doesn't smell anyway. daughter is 20, working, and going to school part-time. She stays with friends/boyfriend most nights, so it is hard to know what she is up to.