Odour does not receive as much attention as the other sense organs. This very undeserved, as odour is apllied more than we know. For instance, taste of a product is determined by its odour for ninety percent. Our tongue only has the ability to taste salts, acids, acrid and sweets. Unknowingly odour plays an important part in perception.
Odours can do more than simply give people memories of images or sounds. This is because our nasal organ is in direct contact with the system where our memory and our emotions are centred. That is why odours are often connected to moods.
What is odour?
But what exactly is odour? This is a very tough question. Some substances have stronger odours than others, only small amounts have to be present to make someone detect them. For some substances it takes a long time before we can detect them.
Odour nuisance can lead to both physical and mental effects (health effects and negative experiences). We have not been able to determine a direct relationship between the odour of substances and the toxicity of the substances, expressed as pathogenic effects. However, people have observed non-toxicological physiologic reactions by odours acting upon the central or peripheral nerve system.
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