Redolent
Etymology
From Latin "redolent-," the stem of "redolens," the present participle of "redolere" ("to give off a smell"): "red-" (a form of "re-," used here as an intensive) plus "olere" ("to smell, give off an odor"), the same root behind "odor" and "olfactory." It first meant simply fragrant; the extended sense "strongly suggestive of" grew from the way a smell can summon something to mind.
adjective · /RED-uh-lunt/
Strongly smelling of something, or richly suggestive of it.
What it names
The word for a scent that fills the air — and, by extension, for anything that vividly calls a memory or association to mind.
Example
The old library was redolent of leather bindings and dust.
Related idea
Evocative means calling feelings or memories to mind by any means; redolent does so specifically through smell, or a smell-like richness of association.