Humans could develop amazing skills of tracking down objects by practicing detection of different smells.//

In an article published recently in Nature it is claimed that by continuous practice a person can help improve their sense of smell. In time it helps the individual to track and locate objects faster and more accurately. Researchers suggested that this was due to the humans possessing two nostrils.

The Amazing Trial A track was set in an open field and 32 participants were asked to detect chocolate essential oil at 10m distance. Around 66% of them completed the trial but when their nostril was artificially blocked they could not achieve the target.

As few of them repeated their trials to gain more practice they seem to do it faster. Noam Sobel at University of California suggested that,
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