Probably gonna have to throw Isabelle's sippy away and get a new one. She was at my parent's…

Probably gonna have to throw Isabelle's sippy away and get a new one. She was at my parent's overnight a couple weeks ago, and ever since, her sippy smells disgusting! Like a fermented smell, kinda like if you leave a glass of wine out overnight. It's so nasty. I've washed it out, put it in the dishwasher, everything and NOTHING gets rid of the smell! I think they left juice in it 😑 I know it's clean, but it smells gross, and it's driving me nuts.