My wife and I purchased this mattress top based on all of the positive reviews. Many of the reviews talked about the smell. We thought that wouldn't be a problem. Once we received this mattress top, we aired it out in a different room for one week with the window open. I thought that would work. It didn't. The chemical smell is still there, so much that you can smell the pad when you walk into the bedroom. For the last two days I have woken up in the morning with a headache, stomach ache and slightly dizzy. I did some research and found that this type of reaction can be common with some people. Secondly, Overstock states that memory foam is not returnable. I admit, we should have done more research prior to this purchase, and checked the return policy of Overstock. I just want to let people know that if they are sensitive to chemical smells, do not purchase this product because you cannot return it.