Terpenes are becoming increasingly popular as people begin to learn more about cannabis. Terpenes are a naturally occurring chemical found in plants and even some animals. In Cannabis they are what creates a distinct smell and flavor between strains. They are originally believed to be the plants own form of a defense mechanism to protect from harsh weather or predators.
While terpenes won't get you high on their own, some think they may impact the effects of THC. This is more commonly known as the "entourage effect". There are about 400 known terpenes in cannabis but only a few have been linked to specific effects. Next time you go into your favorite shop ask for a strain based on its "terp profile" and see what you think!