(いしゅう)

いしゅう
noun
strange smell; foul odor; stench
1. strange smell; foul odor; stench
An unusual or unpleasant smell that is out of the ordinary. Often used to report suspicious or alarming odors, such as gas leaks, chemical spills, or decomposition.
部屋(へや)から異臭(いしゅう)がする。
There is a strange smell coming from the room.
異臭(いしゅう)()づいた住民(じゅうみん)警察(けいさつ)通報(つうほう)した。
A resident who noticed the strange smell called the police.
工場(こうじょう)から異臭(いしゅう)(ただよ)い、周辺(しゅうへん)住民(じゅうみん)から苦情(くじょう)相次(あいつ)いだ。
A foul odor drifted from the factory, and complaints poured in from surrounding residents.

USAGE:
異臭(いしゅう) is commonly found in news reports and official communications. The most typical pattern is 異臭(いしゅう)がする (there is a strange smell).

COMMON COLLOCATIONS:

  • 異臭(いしゅう)がする (there is a strange smell)
  • 異臭(いしゅう)(はな)つ (to emit a foul odor)
  • 異臭(いしゅう)(ただよ)う (a stench wafts/drifts)
  • 異臭(いしゅう)(さわ)ぎ (commotion over a strange smell)

NUANCE:
Unlike (にお)い, which can be neutral (any smell), 異臭(いしゅう) always implies something abnormal and usually unpleasant. It often signals danger or something requiring investigation.