Smell is the sense most often described as instant. A note arrives, and before we can name it, a place or a person has already returned.
Most of us have had the experience without looking for it: a hallway, a coat, a kitchen at a certain hour. Scent tends to bring back the whole scene rather than a single detail, and it often brings the feeling of the moment with it.
That is part of why scent is so personal. The same note can read as calm to one person and as a specific afternoon to another. Any system that works with scent has to respect that difference instead of flattening it.
Designing with association
If scent carries association, then consistency matters. A room that smells the same each evening begins to mean evening. Over time, the scent becomes part of how the space is understood, in the same way that light at dusk tells us the day is ending.
A candle is a moment. A setting that holds is something else.
Aurora is being designed around that idea. The same blend, at the same intensity, at the same point in a routine, so the association has a chance to form and stay.
