Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
sweet-smelling is an adjective meaning "having a natural fragrance". It carries one recorded sense.
having a natural fragrance
“odoriferous spices”
“the odorous air of the orchard”
“the perfumed air of June”
“scented flowers”
Definitions, synonyms and semantic relations for sweet-smelling come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.