People seem to be able to send happy vibes through their sweat, according to a new study in Psychological Science. The study found that women showed more signs of happiness when they sniffed sweat made by happy men than when they smelled sweat generated by men in a neutral emotional state. “Being exposed to sweat produced under happiness induces a simulacrum of happiness in receivers, and induces a contagion of the emotional state,” said study author Gün Semin, a professor at Utrecht University, in a statement.