Dense smoke swirled and billowed, its rank fumes choking her.

浓密的烟雾盘旋翻腾，刺鼻的烟味使她窒息。

《柯林斯英汉双解大词典》

Chimneys exhaling dense smoke.

烟囱冒出浓烟。

youdao

Plant chimneys belch out dense smoke.

工厂的烟囱冒出滚滚浓烟。

youdao

Dense smoke laden with toxic dust from rubbish burnt at the dump billows for miles around.

BBC: Albania's environmental wasteland

"Firefighters in breathing apparatus had to combat quite dense smoke and they found the young lady on the first floor of the house, apparently unconscious, " he said.

BBC: House was on fire

Eyewitnesses said the airport is now covered in dense black smoke following the explosions and emergency services are struggling to cope with the enormous numbers of casualties.

BBC: 27 March