This has actually had me wake up two nights in a row without back pain!! We opened it up in the morning and ran fans and kept a window open for most of the day to get rid of the smell and it was minimal by the time we went to bed. The downside is we already have a pretty thick mattress (just firmer than we would have liked- hence the topper) so even our deep pocket sheets are coming up on the corners a couple times. But worth it IMO