Very nice indeed. Even though his experiences with vetiver and coriander may not be the enormous puzzles he thinks they are (there are simply different vetiver grasses, and coriander is also not a single smell (think only of the differences between fresh, dried and ground coriander) , I love love love the conclusion he draws from these experiences:
Perhaps our sense of this, the sense of belonging to a world held together by networks of ephemeral confidences (such as philosophies and stock markets) rather than permanent certainties, predisposes us to embrace the pleasures of our most primitive and unlangued sense.
A very nice thought.