当聚氨酯燃烧时，有刺激性气味和有毒烟雾放出。的翻译：When polyurethane Burns, irritating odor and emitted toxic fumes. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

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When polyurethane Burns, irritating odor and emitted toxic fumes.

When polyurethane burning, has the irritant smell and the virulent smog emits.

When polyurethane burning, there is a pungent odor and toxic fumes emitted.

When polyurethane Burns, irritating odor and emitted toxic fumes.