煙 means “smoke”

けむり · kemuri

Kun'yomi (Japanese reading)
けむる, けむり, けむい
On'yomi (Chinese reading)
エン

JLPT N3 · Taught in secondary school · 13 strokes

The story

Fire (火) smothered under a lid (垔): it can't breathe, so it smokes. 煙 is smoke: 禁煙 signs mean no smoking, and smokers in Japan gather at the 喫煙所, the designated smoking spot.

Used in 煙 (kemuri, smoke), 禁煙 (kin'en, no smoking), and 喫煙所 (kitsuenjo, smoking area)

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Readings from KANJIDIC2, © EDRDG, CC BY-SA.