Fragrance manufacturers can skirt some rules about listing the contents of their products because the formulas for a particular scent are trademarked and considered proprietary knowledge.
香水制造商能为列出他们产品包含的物质制造出阻碍。因为一种香味的配方是被认为有专利，有知识产权的。
2
A human's scent membrane in the nose is about the size of a postage stamp.
人类鼻腔内的嗅膜大小约相当于一张邮票。
3
Every once in a while, some other guy on the street will be wearing the same scent as him, and all I'll be able to think about is my ex.