Yes, there is a strong smell when it's first unfurled. I let mine sit uncovered for a couple of days and now you have to have your nose right in it to smell it. Let me repeat that: you MUST let it sit UNCOVERED for a couple days. And I wish someone had included this in a review: the foam mattresses are not on the same indicators as regular mattresses. When these babies say firm they mean FIRM. Which is the only reason I docked the ratings a star. It's not uncomfortably firm, not like sleeping on concrete, but had I known I would have gone with a regular. I have a back injury and require lots of support, but these provide that by virtue of what they're made of. Only order firm if you REALLY want FIRM. Otherwise, this is an awesome deal and I love it.