My perception was not related to Hubbard's condition.Hubbard had that same olfactory condition and the Sea Org had to ban perfumes and anything scented in order that he not fly off into rage over all the funny smells in the air.
But I've never heard anyone claim there are "non-physical fragrances" as I've come to think of my very physical nose as being the instrument that gives me the sense of odors and can't fathom how non physical odors occur?
I heard there's a CIA poison that causes the hypersensitivity condition Hubbard had. You'll have fun with that, but that's just something I heard so you'll have to do your own research.