What is the difference between smell and taste, and what does smell have to do with

The sense of smell is smelled with the nose and the sense of taste is tasted with the tongue.

1. The sense of smell is related to the nervous system

The sense of smell and the nervous system are closely related. Olfactory sensitivity depends on the functional status of the millions of sensory nerve cells in the nose. These nerve cells transmit information through the olfactory nerve to the olfactory center of the brain, which in turn allows us to perceive various odors.

However, many diseases of the nervous system, such as Parkinson's disease and Alzheimer's disease, can affect the sensitivity and quality of smell.

In addition, the sense of smell can also be trained and improved. Professional olfactory training can enhance olfactory sensitivity and recognition ability through continuous practice in recognizing different odors. This is very helpful for some professions that require greater olfactory sensitivity and accuracy, such as perfume blenders and winemakers.

2. The sense of smell is related to emotions and behavior

Smell can affect our mood and behavior. For example, certain scents can make us feel pleasant, relaxed, or warm, while others can cause discomfort or disgust. This is because scent is able to stimulate the parts of the brain that control emotions and behaviors, such as the emotional center and cerebral cortex.

Therefore, smell is also important for the marketing of products. The right smell can motivate consumers to be more willing to buy a certain product or increase their satisfaction. For example, adding specific scents to restaurants and stores can help attract customers and increase their sense of happiness and desire to buy.

3. The sense of smell is related to genes

Everyone's olfactory sensitivity and preferences are different. This is related to individual differences in human DNA, i.e., variations in the individual genome.

For example, the gene MHC (major histocompatibility complex) in human smile muscle is associated with olfactory preference. Studies have shown that people who like a certain scent often also like a certain type of human smile muscle. The phenomenon of "similar preferences" can be traced back to the evolutionary history of humans, making it more likely that people with a similar sense of smell will form stable social and emotional relationships.

4. The sense of smell is related to the environment

The sense of smell is also influenced by the surrounding environment. When we are in different environments, our sense of smell may produce different perceptions. For example, in cities, sliding air towards a car can be polluted by car exhaust fumes and industrial emissions, which can reduce the sensitivity of the sense of smell.

In contrast, a cleaner natural environment may be more conducive to the healthy development of the sense of smell.

In addition, different cultures have different levels of receptivity to smells. Certain scents may be seen as nice and pleasant in some cultures, but unpleasant or undesirable in others. Do the grinding.