noun
pungent smell; strong odor
Describes an intense, often unpleasant smell. Used for both literal and figurative strong odors.
冷蔵庫から激臭がする。
There's a pungent smell coming from the fridge.
激臭のする靴下を洗濯に出した。
I put the socks with a strong odor in the laundry.
Compound of 激 (intense) and 臭 (smell). The exact origin is uncertain, but it follows a common pattern of combining intensity kanji with sensory nouns.