Originally Posted by Surfacing
Maybe. I spray on my arm, so it shouldn't be nasal fatigue. I have wondered if I am just anosmic to the scent itself. I have read that about certani musk fragrances. Its too bad, as I really like the opening notes and the subsequent dry down accord.
Where you spray does not affect your likelihood of experiencing nasal fatigue - the phenomenon happens because when you are exposed to the same scent for a period all the receptors in your nose that can detect that particular note become blocked by one of the molecules of that scent. The effect fades when you are no-longer exposed to the particular fragrance note for a while, then you can smell it again. With things like musk that have big complex molecules this seems to happen more easily and to last for longer.
I don't know the formula for Kiehls Original Musk
but it is sure to have more than one musk in it, almost certainly it will have musks from more than one of the categories of musk too.
You may well be anosmic to a particular musk and some people are even anosmic to a whole class of musks (such as macrocyclic musks) but it isn't likely that you are going to be anosmic to all the musks in a fragrance where musk is the main theme. Nasal fatigue is a far more likely diagnosis, though anosmia my be playing a part too: Exaltolide for example is one of the musks that many people cannot smell and would also be prominent during the 3-10 hours after application period that I think is when you are finding there is a gap.