In one study, dogs were able to smell a particular test scent a thousand times better than humans!

一项研究发现，在闻某种特殊的气味时，狗的嗅觉要比人类强上千倍。

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Users are invited to take a simple test, which they have to pop into their mouth for just five minutes, to create their individual chemistry or scent profile.

他们会先邀请用户参加一个简单的测试，测试仪器会探进他们嘴里五分钟，以此建立个人化学或是气味档案。

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To test if they were using scent to locate their prey, birds were offered trays with buried live, moving worms and dead ones.

为了检验它们是否是通过气味来发现食物的，盘子里分别放着活着的虫子和死掉的虫子。

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She sometimes sprays a few spritzes of scent onto her throw pillows. (It's a good idea to test the spray on the back of the pillow to ensure it doesn't leave an oil spot.) She spritzes just the edges of a pillow, not the center, where people may rest their heads.

WSJ: Tricks of the Trade: A Well-Scented Home