When the nose comes into play, the mind has a break. After all, fragrances have a direct link to the evolutionary age-old centers of our brain and thus circumvent conscious thinking. The sense of smell is also linked to the seat of emotions, memories, memory and hormones in the brain. Not only the food does not taste good without a nose, even the choice of a partner would be a difficult task without them - even an impossible task for animals.
Fine noses are good for animals
In a small area of our nose, the nasal roof, there are olfactory cells that are activated by smells around us. They also carry receiver antennas or receptors that react very specifically to specific odors. So for "chocolate scent" there is only one antenna.
The human nose has about 350 receptors and therefore can distinguish about 350 different odors. No comparison, however, to animal noses, for example of dog, rat or mouse, which differ 1000 scents. Whether we smell and taste right is also dependent on the feeler nose and mouth. Burning and stinging in the nose, caused by cigarette smoke or vinegar, or the cooling effect of peppermint oil come about through simulation of thousands of these nerve endings.
Without a nose, life tastes bland
The aroma of the food is limited to the four flavors sweet, sour, salty and bitter, without olfactory cells and sensory nerves. Easy to understand, for example when holding your nose. Chocolate then only tastes sweet, the typical aroma is missing. With the tongue you can distinguish a lemon from a banana, but all the subtle nuances that make up the food are missing. Everyone knows this phenomenon also from a strong cold by cold, flu or allergy. Because nothing tastes good, people with olfactory disorders often suffer from depression.
You can smell feelings
Every feeling, such as joy, excitement, anger, fear, happiness or sadness smells different. Most animals can smell that, but also some people. After testing, therefore, often remains a peculiar smell in the room. So far, however, these substances, which are responsible, have not yet been identified. Unpleasant odor is also often produced by decay products of bacteria on the skin.
Our smell is more precise than a fingerprint ...
Every person smells different. The individual body odor of a human being is largely determined by his genes and is more precise than the fingerprint. Only identical twins can smell the same. The individual smell tells other people which genetic material we carry within us, namely whether we are genetically close or foreign to them. Because nature desires diversity above all, often strangers can smell very good, because reproduction would yield many new and different offspring. In addition to individual smells, there are also the pheromones, which give information in animals, for example about mating readiness, territorial behavior or family recognition. Without this chemical communication, animals are not viable.
Viruses or blows can completely confuse noses
If the olfactory sense is completely destroyed, it is called anosmia (loss of smell). In the partial odor loss, the parosmia, odors are misinterpreted; Very often, smells that used to be pleasant were suddenly perceived as unpleasant. In some people, this disorder is congenital, in others caused by viral infections, such as flu or skull injuries, such as fall or blow on the head. Generally, the smelling ability diminishes from around the age of 60.
Wet noses are not only healthy in the dog
The nasal mucosa is responsible for filtering the air of germs and moistening the air. It is covered with a fine moisture film of nasal secretions, which prevents the ingress of dirt, common cold viruses and other germs. Dry out the nasal mucous membranes - for example, by heating air - the filter function of the nose is disturbed. Dry mucous membranes therefore increase susceptibility to pathogens. Bacteria and viruses are no longer transported away fast enough and migrate into the paranasal sinuses.
Nose care makes spring flirtation a success
The nasal mucosa should therefore not dry out if possible, so that the immune system and ultimately the sense of smell remain functional. In the absence of odor sensitivity, an important alarm system is missing in the body. Otherwise, for example, we would not be aware of toxic fumes or eat rotten foods. Regular cleansing of the nose with pure seawater promotes, for example, the natural self-cleaning mechanism of the nose. Simple home remedies are nasal rinsing with homemade salt water or even simpler: seawater spray from the pharmacy, which contains the minerals and trace elements of the Atlantic.