Wait. What? Really? Yes, really. While there are a ton of factors that contribute to our friend-making abilities, apparently our sense of smell may play a bigger role than most people realize -- and yes, this is as weird and "out there" as it sounds. Science is nothing if not weird, though, and the fact that a group of researchers chose to delve into our noses and brains to see how it all connects to our posse is pretty amazing.
The researchers for this particular study used a laboratory test amusingly called "Sniffin' Sticks" to tease out just how much the test subjects could or couldn't smell. Who says scientists don't have fun, with their Sniffin' Sticks and all?! They did all the proper researcher-ish things to sort their humans beforehand, such as requiring that they lived in a particular area, were right-handed, didn't suffer from ear, nose, or throat problems, and had no prior history of psychosis, depression, suicide, epilepsy, or drug abuse.