Answer:
When freshly crushed, the root has a very sweet scent, but as it is produced (by steam extraction) into the oil, it is a more semi-sweet, musky odor.
It retains its scent indefinitely when kept in a closed jar or container, and can be reconstituted if it dries out by placing into a closed jar or container and allowed to have a room-temperature curing time.
NARD (Spikenard) has healing potential for stress situations and is also said to be useful in many other applications, internal and external.