Pheromone

A Harvard University researcher recently conducted a study that added a pheromone found in younger women to the perfume of older women and found it enhanced their love lives.

Smoke pacifies bees, by dulling their ability to smell a special pheromone that is released by the hive's guards whenever they feel threatened. After this hive of about 60,000 bees has been doused in smoke, the evening's lesson begins.