I really love this mattress. Although I ordered the 14 inch high mattress, I didn't realize how high it would actually be when on the box springs--it is wonderful, but a warning, it might make you need a longer dust ruffle or spread. I was fine, but as mentioned, the bed does sit high and has a grand presence. The instructions said to unfold it and spread it out to breathe and take shape for 24 hrs. I let it do so for 48 just to be sure. I did NOT notice any unpleasant smell from the foam at all. I ordered the firm, and it is very firm, but not hard, which is good. My old mattress, which was pretty expensive, caved in the center which is why I got this one. I've had it about a month. So far it looks and feels great.