The toxic gases do harn to people's health.

有毒气体危害人们健康。

youdao

The majority of people who die in fires don’t die from burns, but rather they suffocate due to the lack of oxygen and inhale toxic gases such as carbon monoxide, carbon dioxide and hydrogen cyanide.

火灾中大部分人不是被烧死的，而是因缺少氧气窒息而死或是吸入如一氧化碳、二氧化碳、氯化氢等有毒气体而被毒死的。

youdao

The majority of people who die in fires don't die from burns, but rather they suffocate due to the lack of oxygen and inhale toxic gases such as carbon monoxide, carbon dioxide and hydrogen cyanide.

火灾中大部分人不是被烧死的，而是因缺少氧气窒息而死或是吸入如一氧化碳、二氧化碳、氯化氢等有毒气体而被毒死的。

youdao

When they then fired chemical weapons, the toxic gases seeped in and often pooled in the cellars, proving even more deadly, she said.

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On Tuesday, state pathologist Prof Jack Crane said the levels of hydrogen sulphide and other toxic gases were high enough to render the men unconscious.

BBC: Noel (L), Nevin (centre) and Graham Spence (R)

Japan had hoped to get away with simply building a factory ship that would process the poisonous gases and toxic chemicals in a Chinese port and float away when the job was done.

ECONOMIST: Japan and China