This may be because some people do not have the genes necessary to generate 10 smell receptors in the nose.

这可能因为他们鼻子缺少一些基因，这些基因对于产生（10）专门的嗅觉感受器是必要的。

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For one, it doesn't explain, why we can detect tens of thousands of odors with only a few hundred smell receptors.

其一，它没有解释，为什么我们能够依靠几百种的受体来感知数以万计的不同气味。

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The brain finds it best to keep smell receptors 19 for unfamiliar and emergency signals 20 the smell of smoke, which might indicate the danger of fire.

大脑发现最好使嗅觉感受器(19)用于保持对不熟悉和紧急事件信号的敏感，(20)比如烟的气味，这可能表明了火灾的危险。

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Three years ago Lubert Stryer, a professor of neurobiology at Stanford University, became intrigued with olfaction, thanks in part to two fellow scientists who uncovered a family of genes whose receptors for smell and taste are turned on at the base of the nose.

FORBES: Breaking a Sweat

Ambryx has gained exclusive licenses to libraries of smell-and taste-related receptors from Johns Hopkins University, Rockefeller University, Harvard and the University of California at San Diego.

FORBES: Breaking a Sweat

Columbia University's Richard Axel, whose work on mapping the genes and receptors of our sense of smell garnered the 2004 Nobel prize for physiology, said the kinds of experiments revealed this week would not resolve the debate - only a microscopic look at the receptors in the nose would finally show what is at work.

BBC: 'Quantum smell' idea gains ground