Aisen Caro Chacin – she made a clock that tells you what time it is through smell.
Each time of day is associated with a specific aroma: in the morning there is the smell of coffee, in the afternoon the smell of money, in the evening the smell of whiskey, and at night the aroma of chamomile is offered.
You can't read the exact hours and minutes this way (although the device does, of course, contain a "real" clock, which ensures that the time and scent match). The latter comes from four ampoules located on the back of the watch strap, each containing one milliliter of fragrance that is pumped into the air every 10 seconds (which can also be individually regulated).
For now, Scent Rhythm, as the device is called, exists only as a prototype, and I doubt it will ever become a product. Especially since they forgot that lunchtime definitely requires a hearty canteen smell.