odoriferous vs sweet-smelling

odoriferous and sweet-smelling both are adjectives.

Word	Noun	Adjective	Verb	Adverb
odoriferous	No	Yes	No	No
sweet-smelling	No	Yes	No	No

As adjectives, odoriferous and sweet-smelling are synonyms defined as:

Other synonyms of odoriferous include odorous, perfumed, scented, sweet-scented, sweet.

odoriferous (adjective)	sweet-smelling (adjective)
having a natural fragrance	having a natural fragrance
emitting an odor