10 facts about smells
• 10 facts about smells
Nature endowed the human five senses, and the sense of smell - an important element of our perception, which allows us to explore the world. Smells around a lot and they are all so different. Although for many of us the sense of smell plays such an important role, as sight or hearing, but found dozens of facts about the smell will not be superfluous.
Male butterflies Astias selene feels the smell of females over 11 kilometers.
The dog nose 230 million olfactory cells, and we have - 10 - 11, that is twenty times less.
However, the dog can not find something that does not smell. The Czechs, who, until recently, the only manufacturers of explosives was not added to her odoriferous substances, severely hampered the international community to fight terrorism.
dragged the dog to apples is more difficult than for drugs. Dogs, coached for fruit, work in US airports, where the passage of small lots of fruits and vegetables is prohibited, so as not to import them from pests.
The animals can not distinguish and respond only to one person need smell. This occurs, including the fact that the olfactory cells completely changed in the last month. If dogs could distinguish only one smell, one could produce, for example, odorous dollars, which would remove the problem of currency smuggling.
In humans, the most favorite are the smells of fresh bread, freshly cut grass and coffee. Smells of coffee and rolls not only stimulate the appetite, but also increase the desire to buy. So often in large stores smell of coffee and fresh pastries.
Many animals have a favorite smell. In dogs, for example, is the smell of anise, a cat - valerian and peppermint, like lions good spirits. But the camel attracts smell of tobacco smoke.
French perfume database includes in its catalog of over 8,000 titles. Modern perfume may consist of 300 different components. To create a perfume used by more than 6000 names of various raw materials.
Citizen, living in the midst of the noisy civilization, does not feel up to 70% of the city smells. African, living in the wild, able to catch the scent of her friend, passed along the forest path a few hours ago.
It is known that the body distinguishes one from the other scent in the olfactory bulb. The fish with their fantastic onion smell awesome, and the brain - a pimple. The man - on the contrary. What for? It turned out that the person - and only it - is engaged in the processing of information, not only the bulb, but also the brain. Scientists now believe that once our brains began to grow, and that is why he started to serve the sense of smell. And then I got stronger and took on additional roles and became what has become.