Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: buyer beware

Thought this item was going to be great, but on the first day of using it there was a burning smellgoing throughout my house. I did what you do with all new products. I let it run everyday until thesmell goes away. Well, it's been two weeks now and the smell has not gone away even though I've usedthe product each day. What a let down. You better believe that it's getting sent back.