Sense of smell sucks lying down

ScienceDaily: Researchers Find That Sense Of Smell Is Dependent On Body Position

Who needs a sense of smell, really, when you're in bed. In an evolutionary sense, if you're already lying down with someone - you're more than likely to get lucky. A sense of smell would be a waste of energy because at that point, you're almost a sure thing. Whereas if you're flirting with someone, you're probably not lying down - yet. Then it would be a good idea to get a decent whiff of this person so you can better decide whether or not he or she is worthy of a potential gene swap with you. Evolution rocks!