Terpenes are highly aromatic compounds that determine the smell of many plants and herbs, such as rosemary and lavender, as well as some animals.
Many terpenes are bioactive, which means they may affect the body. This effect will vary based on the concentration of the terpene itself and how a person uses it.
Because terpenes produce vibrant smells, they form the basis of many essential oils and are an integral part of many alternative therapies, such as aromatherapy. Inhaling the scents from some plants and essential oils may affect a person’s mood and stress levels.