Musk, substance obtained from the male deer and having a penetrating, persistent odour. it’s utilized in the very best grades of perfume due to its odour characteristics, ability to stay conspicuous for long periods of your time , and skill to act as a fixative. Its quality varies consistent with the season and therefore the age of the animal from which it’s obtained. In India and parts of the Far East , aphrodisiac, stimulant, and antispasmodic effects are attributed to musk.