If one has to go to a recorded time when one could be sure of the prevalence of Aromatics, one has to Time Travel to…. Ancient Egypt.
Translations of Ancient Egyptian Hieroglyphics (Medu neter) show manuscripts, that Priests and Alchemist were using extracted oils from plants and herbs for healing thousands of years ago. This makes essential Oils the earliest known medicine highly revered.
The Pharaohs of Ancient Egypt routinely exchanged Blue Lotus Oil with the kings of India for gold and other precious goods. And so it is… essential oils were at one time in history considered more valuable than gold.