My HormonologyUnsure if someone you’re crushing on feels the same way? Try sidling up close and taking a sniff. If you get a hunch that the cutie is into you, chances are, you’re right! Why? People’s perspiration contains pheromones–certain chemicals that communicate messages to others nearby. And when that message is one that says, “I’m attracted to you”, the brain detects it, reveals a study out of Rice University.