马丁斯-格林及其团队检测了小鼠的大脑，发现接触三手烟一个月后，小鼠的肾上腺素等应激激素水平上升。

Additional stress hormones are seen at two months, four months, and six months, eventually causing immune fatigue in the mice.

随着接触三手烟的时间增加至2个月、4个月、6个月，小鼠的应激激素水平持续升高，最终产生免疫疲劳。

'THS is a stealth toxin, a silent killer,' Martins-Green said.

马丁斯-格林表示：“三手烟是一种隐形毒物、沉默的杀手。”

'Contaminants can be absorbed through the skin and through breathing. Although our research was not done on humans, people should be aware that hotel rooms, cars, and homes that were occupied by smokers are very likely to be contaminated with THS.'

“污染物可以通过皮肤接触或呼吸被人体吸收。虽然我们没有对人类进行研究，但是人们应该意识到，宾馆房间、汽车以及自家房屋被吸烟者污染的可能性很大。”

THS toxins, which are invisible but can be smelled, remain on surfaces for many years, and are resistant to even strong cleaning agents.

三手烟无形但是有气味，可以在物体表面残存多年，且甚至连强效清洁剂也无法去除。

Further, they accumulate and age by reacting with the ambient air, and change into carcinogenic chemicals.

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