Limonene
Limonene ( d-limonene ) is a terpene usually found in limes, lemons but especially oranges. Limonene is also used in every day products, due to its very strong smell. Surprisingly it is in wide range of products such as insect repellents and perfumes to sodas and desserts. There is even studies that suggest smelling limonene might help relieve stress. The purpose for limonene in those products are to act as a anti-stress or a anti-oxidant.
strains that have limonene; Jack Herer, Jack Haze, Lemon Skunk, watermelon zkitles,
Fun Fact! most strains with any citrus in the name, will most likely contain limonene. This goes for most terpenes as well.
image used is from https://torreyholistics.com/limonene-strains-can-produce-and-anti-anxiety-effect