Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Was good for a bit, but now smells and tastes like plastic

I was very happy with this bottle at first, but after using it for a couple of month, I noticed that the inside of the bottle started smelling strongly of plastic. Soon the water was smelling and tasting like it too. I don't feel comfortable using this any more, because it really feels like I am drinking BPA-infused water. Also, I haven't really noticed it being that insulating either. The water was just as warm as in my other regular bottle. So my recommendation to other buyers would be to pay a couple of extra bucks and get a real Polar bottle or another kind, but not this item.