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The intricacy of a smell

机译：错综复杂的气味

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We all need a nose. Inside this part of an animal's body lie millions of olfactory receptors awaiting smells that they will send on to the brain. In turn, our brain will say whether the smell is good, or bad - a simple way of informing an animal of what could be potentially harmful for it or, on the contrary, beneficial. The mechanism is pretty straightforward and has evolved over time to give the best chances of survival to living species. As for humans, their olfactory capacities are naturally far less fine-tuned than a dog's or a wild animal's, but they remain essential nevertheless. We are still very much aware of smells that spell 'not good' or 'lovely', and react accordingly. For years, researchers have wondered whether the actual perception of a smell has a genetic basis. Much has already been written on the subject, and the answer seems to be 'yes'. Recently, scientists discovered that the perception of the characteristic smell of cut grass has a genetic basis, and is probably under the influence of an olfactory receptor dubbed 'olfactory receptor 2J3', or OR2J3.
机译：我们都需要鼻子。在动物身体的这一部分中，存在着数百万种嗅觉受体，它们等待着气味，这些气味会传递到大脑。反过来，我们的大脑会说出气味是好还是不好-一种简单的方法来告知动物可能对它有害或相反的有益物质。该机制非常简单，并且随着时间的推移不断发展，为生物提供了最大的生存机会。对于人类来说，它们的嗅觉能力自然不如狗或野生动物的微调，但它们仍然是必不可少的。我们仍然非常了解拼写为“不好”或“可爱”并相应做出反应的气味。多年来，研究人员一直想知道气味的实际感知是否具有遗传基础。关于这个问题已经写了很多，答案似乎是“是”。最近，科学家发现对割草特征气味的感知具有遗传基础，并且可能受到被称为“嗅觉受体2J3”或OR2J3的嗅觉受体的影响。

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