Odorant

As you add Odorant to a recipe, just hold the idea of the scent in your mind, and the scent will be conveyed to the recipe. On an assembly line, this raises a unique problem. If the alchemist using the Odorant is distracted, you may find your potion does not smell like Banana or Cherry at all, but someone's coffee, a bologna sandwich, or something in the alchemist's gym locker. And these are by far NOT the worst possible outcomes.
Similar to Flavorant