May not be the case but has the bottle for the seal on the lid still? (It’s like a little rubber band) check the other two bottles and see if they leak, if not it might be the case that you just need a new seal for that one bottle which I’m pretty sure you would be able to buy/email Nuby to see if there are replacement seals on their website etc. some companies will send them for free. Xx
‌
‌
‌
‌
‌
‌
‌
‌
‌
‌
‌
‌
I've heard so many good reviews. I'd say if you brought it second hand it's mist likely come from damage from dropping or something 🤷 I'd try the second one and see x