From Fallen London Wiki (Staging)
in case someone can provide a better trim than me:
Oneirosmia
When the Waswood is given just the right inducement, you can fit years' worth of study into the span of a single sleep-breath. The trick, then, becomes remembering enough of the dream to actually be of use.
Gebrandt teaches precisely, unrelentingly. There is an art to perfumery, true, but the bulk of it is chemistry. The substances you employ afford no room for error, but creation without flair – without risk – is the act of a coward.
There is much that happens that your mind will forget. But sometimes, your nose will guide you, and your hands will know what to do.