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.
Legal commentators have described possible systems for trademarking scents.
In the United States, Hasbro has a trademark for the smell of Play-Doh.