noun
soot and smoke; dirty smoke
Refers to smoke containing soot or particulate matter, often from industrial or combustion sources. Commonly used in environmental and pollution contexts.
工場から出る煤煙が大気汚染の原因になっている。
Soot and smoke from factories are a cause of air pollution.
煤煙防止のための規制が強化された。
Regulations for the prevention of soot and smoke have been tightened.
Compound of 煤 (ばい, 'soot') and 煙 (えん, 'smoke'). The reading ばい for 煤 is the on'yomi, and えん for 煙 is also on'yomi, forming a standard Sino-Japanese compound.