Smell rights

Smell rights are claims of ownership to particular smells. These rights can include copyright or non-conventional trademark.
In France, the scent of a perfume is not eligible for copyright.
In 2006, a Dutch court ruled that a perfume could have a copyright. The case was a claim of French cosmetics company, Lancôme, on the property of the scent of its perfume Trésor against the version of such fragance done by the Dutch firm Kecofa. The Dutch High court granted the protection given that scent as long as it is perceptible and original.
Legal commentators have described possible systems for trademarking scents. WIPO has collected information on the use of registration of the such called "Olfactory marks" as a tendency among national offices of trademark.
In the United States, Hasbro has a trademark for the smell of Play-Doh.