答案在The Economist July 2nd 2022 Science & technology “Human behaviour --- Smell you later, alligator” 这篇文章首段可以找到。
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infer v.
1. 推断，推论，推理
同义词： deduce, understand, gather, conclude
2. 暗示
造个句子
He inferred from her expression that she wanted to leave.
从她的表情他可判断出她想离开。
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Dogs greet other dogs nose-first, as it were—sniffing each other from fore to (especially) aft. People are not quite so open about the process of sniffing each other out. But the size of the perfume industry suggests scent is important in human relations, too. There is also evidence that human beings can infer kinship, deduce emotional states and even detect disease via the sense of smell.
Now, Inbal Ravreby, Kobi Snitz and Noam Sobel of the Weizmann Institute of Science, in Israel, have gone a step further. They think they have shown, admittedly in a fairly small sample of individuals, that friends actually smell alike. They have also shown that this is probably the case from the get-go, with people picking friends at least partly on the basis of body odour, rather than the body odours of people who become friends subsequently converging.
狗向其他狗打招呼时都是用鼻子从头到（特别是）尾嗅对方。而人类对彼此嗅探对方的过程不如狗那么开放。但香水市场的大小表明，气味在人类关系中也很重要。还有证据表明，人类可以通过嗅觉来推断亲属关系，演绎情绪状态，甚至检测疾病。现在，以色列魏茨曼科学研究所(the Weizmann Institute of Science)的Inbal Ravreby、Kobi Snitz和Noam Sobel又向前迈了一步。他们认为他们已经证明，诚然，在一个相当小的个人样本中，朋友们实际上闻起来气味相似。他们还表明，这种情况可能从一开始就存在，人们挑选朋友至少部分是根据体味来选择，而不是后来成为朋友的人的体味趋同。
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