source: Ookami Kodomo no Ame to Yuki – The Wolf Children (Review) – Animaddict Official Blog

ODOROUS, FRAGRANT, REDOLENT, AROMATIC mean emitting and diffusing scent.

ODOROUS applies to whatever has a strong distinctive smell whether pleasant or unpleasant.

e.g. odorous cheeses should be tightly wrapped

FRAGRANT applies to things (such as flowers or spices) with sweet or agreeable odors.

e.g. a fragrant rose

REDOLENT applies usually to a place or thing impregnated with odors.

e.g. the kitchen was redolent of garlic and tomatoes

AROMATIC applies to things emitting pungent often fresh odors.

e.g. an aromatic blend of tobaccos

having a pleasant or sweet smell.

〈花･庭などが〉香りのよい［高い］; 【花･物などで】よいにおいのする, 芳香を発する «with»

fragrantly adverb

late Middle English: from French, or from Latin fragrant- ‘smelling sweet’, from the verb fragrare.