Musk rat led to musk deer and later mystics of Musk

Musk deer, intoxicated by its own smell, would roam the mounts and vales of the Himalayan range to find it, never realising that this most beautiful smell was in fact hidden within itself, thus symbolising Man going after mundane pleasures

the good scent is always the hidden one, the one within, the scent of the soul

The Quran mentions musk only once, in the sura al Mutafifeen, they will be given to drink a pure wine, sealed, the last thereof will be the smell of musk. 

This association of musk and wine would later give birth to some of the most beautiful pieces of Sufi poetry about the inherent antagonism between Heaven and Earth, between humanity and eternity. 

The pure, or rare, wine is indeed the symbol of the pure Divine Essence, this wine sealed before Adam as Alawi puts it. 

The pure, or rare, wine is indeed the symbol of the pure Divine Essence

Musk, back then, was a sign of sanctity, of mans essence returned to its adamic state, face to face with its Creator