Our new engineered hardwood floors are about halfway installed and look great, but my focus unfortunately is on the odd smell, something like overly ripe fruit--a cloyingly sweet smell that I can't stomach. I'm fairly sure it is from the leveling cement that our installer has used (the floor boards themselves have no detectable order). I asked him and he said it'll be fine once the floor covers it (ummm?). I didn't note the brand of the leveling material--I will check today--but our installer was aware that we have two chemically sensitive people in the household (we went through several days of choosing the safest glue--we chose Bostik GreenForce). I realize some people don't worry much about this stuff, but if that smell doesn't go away, I can't imagine living there. We do keep our windows open a lot, but still. The installer has 10+ years experience and came with high reccos from several neighbors, fwiw. Any thoughts on how long this smell will linger or if there's anything that can be done? Thanks.