Right now we have a tremendous chemical smell from the new purchase.  The mattress has been off gassing for 2-3 days now.  Still a strong odor. We have it in a back room with windows either wide open or cracked, fan going 24-hours.  Have taken Wayfair's quality for granted.  This is a wake up call.  Hoping we can use this purchase and not have to return it. This smell was not present with another brand of memory foam mattress that we recently purchased from Wayfair.