Castoreum

One of the substances tried was castoreum.[…]If I were to judge from my own experience, I would say castoreum has very little therapeutic power, for I have not seen much benefit from its employment in those cases to which this remedy is said to be adapted.

While the role of castoreum as a means of territorial advertisement has been extensively investigated and supported, the possibility of coding for sex information has not yet been excluded.

Synthetic castoreums are now available, and can be as good as the natural fragrant^([sic]).

Real oud is complex material, with honey, tobacco, leaf, minty-fresh and castoreum animalic notes all mixed together.