noun, taru-adjective, adverb taking the 'to' particle
stinking; reeking; foul-smelling
Describes a strong, unpleasant odor permeating the air. Often used in literary or descriptive contexts. Can function as a noun, taru-adjective, or adverb with と.
部屋の中は臭気芬々としていた。
The room was filled with a foul odor.
臭気芬々たる下水溝のそばを通った。
We passed by a stinking sewer ditch.
Compound of 臭気 (shūki, 'bad smell') and 芬々 (funpun, 'strong-smelling'). 芬々 is a reduplication of 芬, a kanji associated with fragrance or strong odor, here used in a negative sense.