Modern research in the science of scent proves that the perfumes smell good or bad, according to if the ultra high frequency chord of the frequencies of the atoms in the molecule of the substance is of high harmonic score or not (see post 40).
Improvisers of meditating music usually have, close to their instrument, a source of a good smell or perfume to...inspire them (see e.g. Estas Tonne https://www.youtube.com/watch?v=7gphiFVVtUI )
Here is the relevant video
http://www.ted.com/talks/luca_turin_on_the_science_of_scent
