a specific class of aromachemicals in fine fragrance, for which you can refer to the linked article). So what have the shops come up with to counteract that nasal tiredness? They devised a technique of fighting boredom of the nasal passages with an aroma so strong and different that the jolting sensation would recalibrate our ability to smell: coffee beans. Freshly roasted, dark and aromatically pungent. Does the trick work? Usually not so well, in our experience. But now scientific research backs this claim up.