In wine tasting they have kits to provide reference points for tasting (think grass, musk, fennel).https://www.thewinesavant.com/products/sommelier-wine-aroma-kit-the-nosing-kit-by-the-wine-savant-master-connoisseur-smelling-kit-to-train-your-nose-80-fragrance-training-kit-for-wine-lovers-wine-game-gifts-for-holiday-him-her Which are basically essential oils if I recall. Is there anything similar in the fragrance world? For example, things like oud, vetiver, guiac wood and other components I don't have a reference point. It would help both in selecting fragrances but also as reference points for existing fragrances to help recognize the components as they are emitted.