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Your nose can remember 50000 different scents


The human body in itself is a miracle of its kind. We always wonder how a small sperm develops and takes the human life in a mother’s womb. There are end number of curiosities which come to our mind, and we often search answers for it. We have a different approach towards what we see, what we hear or what we feel. Humans always react to things in one particular manner. They show a preference to sight first, listening second and touch and taste in the third position. Smell is probably the fifth sense that hits our inclination list. The nose is also one of the important responsive organs when it comes to distinguishing between bad or good smell.

Our nose may not be as sensitive as animals, but still, it can memorize around 50000 types of aromas. Researchers say that human eyes can differentiate among thousands of colors and ears millions of sounds. Although our nose is an incredibly pungent, sometimes we are barely aware of the smell we are sensing. The researchers from Rockefeller University and the Howard Hughes Medical Institute (HHMI) experimented on volunteers, and have discovered that our sniffers can easily make out the difference when exposed to various kinds of odors. This research clearly testifies that our nose is the sensitive part of the body.

The number of smells recognized and memorized was doubtful by some of the scientists. The reason being was that the human eye uses three receptors to see so many colors, while our nose uses 400 olfactory receptors to retain the smells. Now, the result is observed by various other factors which help in analyzing these different fragrances.

How can this small nose differentiate among numerous colors? There is a process which is followed inside our nose to distinguish the smells. The atmospheric air which enters the body is different in warmth and moisture from the air inside the body. The composite interior of the nose expands the exterior of the respirational area and compels air to reach the lubricated tissues coating the nasal opening. Hairs and slimy texture on the inner part also filters the wastes before it enters the lungs. This air gets moistens before reaching the lungs. As this air respires from the lungs, it goes back via nose where its moisture and heat is locked in by the skin and used to moisten the next breath of air.

Some of the air elapsing the nose goes over the olfactory epithelium, whose thin coating of mucus blocks some of the particles. These particles then come in touch with olfactory hairs outspreading from olfactory receptor neurons in the epithelium. Odorant molecules rouse the olfactory receptor neurons to create a combat activity, which trips sideways their axons through gaps in the ethmoid bone to the olfactory storage organ. Neurons in the olfactory bulb obtain the combat ability and transmit the nerve indications into the olfactory area of the brain where the information is translated and managed to give feel of smell.

With the evolution taking place, we often doubt whether we will be able to sense the new products available in the market now and then. But the complex mechanism of our nose is ever ready irrespective of any changes taking place.