our new couch is stuffed with Urethane foam pad, it is smells, like it is off-gassing. should I be worried?
Unless you have asthma or breathing problems, or you are pregnant or quite ill, it should not present any medical problems. The urethane, if that is the out-gassing source, should naturally out-gass within a week. You can shorten the process by opening windows and turning a fan on the couch to speed up the process. The out-gassing can be shortened to as little 24 hours by this method.