Interestingly coumarin, the substance which gives newly mown hay its characteristic odor, is employed to impart a vanilla flavor to certain inferior tobacco products, and can be found as an ingredient in certain perfumes (2).

• 有趣的是，双香豆素，这种能够为新的轮车草提供特殊气味的物质，被添加于劣质香烟用作香草香精，在香水中其也被用作香料。