Safrole is a natural organic compound found in the essential oils of several plants, particularly in the root bark of the sassafras tree and in camphor oil. It has a sweet, anise-like aroma and is often used in the production of fragrances and flavorings. However, safrole is also known for its potential health risks. It has been classified as a possible human carcinogen by the U.S. Environmental Protection Agency (EPA) due to its association with liver tumors in laboratory animals. As a result, its use in food products is restricted in many countries.