虽然表皮细胞中鲨烯的含量往往高过胆固醇的含量，但是研究人员在灰尘里发现了两者相反的比例。

And while skin cells contain more squalene than cholesterol, the researchers found the opposite ratio in dust.

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丹麦化学家Charles Weschler和他的团队对除了地板表面的以外的灰尘进行了分析，结果显示鲨烯清除臭氧比胆固醇(皮肤上的另一种油脂)更具效果。

Chemist Charles Weschler and his team analyzed dust from non-floor surfaces in Demark, showing that squalene was more effective than cholesterol (another oil found on skin) at removing ozone.

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这可能是因为烹饪和其他活动也同样向室内环境中释放了胆固醇，也有可能是因为建筑物中的臭氧正在吸收鲨烯。

It could also be because ozone in the buildings is sucking up squalene. This was the first study to look at skin-derived substances in indoor dust.

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