Some describe the cannabis plant as having a skunky, floral, pungent, or earthy odor. These odors come from terpenes and terpenoids in the cannabis plant. Terpenes are organic compounds that have a strong odor. These odors are described as citrus, pine, spicy, or even candy. Different terpenes include myrcene, caryophyllen, linalool, humulene, limonene, and pinene. Terpenoids are derived from terpenes which have been chemically modified. The cannabis odors (terpenes and terpenoids) often escape the interior of the growing, processing, and packaging rooms of the grow houses.