I chose smoke as the final sample as I couldn’t think of any better scent to symbolise death.
I mean… incense/embalming substances, hospital antiseptic, funeral home flowers, etc.? When I imagine smoke scents I think campfire, barbecue, maybe even cologne. Probably not death.
I imagine that he’s dying of smoke inhalation whilst asleep at home (perhaps having started a fire by leaving an oven or something like that, due to an implied memory condition).
I didn't pick up on that at all. It seems like a bit far of a logic jump to make from the dream to the real-life scenario, for me, especially with the "guy apparently inadvertently started a fire, and now he's dying" exact scenario.
I could either drop the smoke aspect entirely and just have him smelling the mysterious sample and suddenly coming to the realisation that he’s dying
I mean… I probably would have set it up as the guy thinking, "wow, it smells like a florist shop. Or a funeral home." and then the perfumer just shrugs and says something like, "well, someone left some flowers on the bedside table" and let the reader put the pieces together.
Is there a guide that you’d recommend which deals with this aspect?
I don't we have any guides on characterization specifically (if we do, I'm not aware of it) for tales/prose, but for something like this I recommend thinking up small details about the guy that makes him different from the average person. The portion with the kid remembering the butterflies and his mother was excellent—it's distinct, and something unique to the character. The paragraph starting with "He smelled many smells that afternoon, with each" is a little more bland until the last memory. I recommend splitting that paragraph up into two, maybe three paragraphs, and going into a little more detail with the associated memories leading up to the diagnosis/tarmac bit. More than just "this was the smell of this", go into "this was the smell of the memory of this". Maybe even describe those specific smells too. Guy's sniffing perfume, might as well give the readers more description than just "sweet" and "surgical" and the like.
Would you be happy to read through my draft after a rewrite, to check whether my changes actually improve the article?
It's sweet and short, so I don't see why not!