Cineol is another term for eucalyptol which is an abundant terpene found in the eucalyptus tree and other plants, including the cannabis plant. Cineol is a terpene that is touted for its ability to open the airways was strong effects on respiratory function. Cineol is also suggested to have anti-inflammatory and antibacterial properties with the ability to kill fungi and bacteria. Cineol has a wide range of uses and is found in many aromatherapies, skincare, and massage oil products.