I had recently moved after a divorce and bought an inexpensive mattress. I slept on that thing for a year. It was too soft, and I was waking up with numb hands and bad neck. I finally splurged on myself and ordered this mattress. I am a small person (5'1") and was able to drag it back to my bedroom, because it is well wrapped in heavy plastic. I have a platform bed, so I put it up there and carefully cut the plastic. It expanded in minutes and was ready to make up in about and hour. I couldn't wait! I have not had any problems with smells, and I consider myself pretty sensitive. The first night I slept like a dead person. I woke up early, which I have not been doing because of tossing and turning on my other mattress, and well rested. And have been ever since I got it. I had that other expensive foam mattress while married (couldn't lift it to carry it here with me), and this one is comparable. I like a firm mattress, but because of the reviews here, I bought the medium, and it is perfect. Sleeping on these type mattress reminds me (at first) of how it feels to lie in sand, so be ready for that. I wake up now with my hair sticking up on one side, which is good. It means I fell asleep in one position and pretty much woke up the same way. No more tossing and turning. This is well worth the money! I love it and would tell anyone to get one!