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How Do We Smell?

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Last updated date: 18th Jul 2024
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An Introduction to Sense Organs

Organs respond to external things by conveying impulses to the sensory nervous system known as sense organs. Sense organs are particular organs that assist to see, feel, hear, etc. our general surroundings. They are a necessary part of our lives and form the main way of seeing the climate. 

Receptors give the necessary information through different organs and communication of nerves in light of a specific actual stranger. These senses enable our affiliation and our cooperation with the climate. We have five receptors: Eyes, Ears, Nose, Tongue, and Skin. 

These five sense organs contain receptors that transmit information through sensory neurons to the proper spots inside the nervous system. The receptors could be arranged into two sections viz. the general and unique receptors. The former is available all through the body, while the last option incorporates chemoreceptors, photoreceptors, and mechanoreceptors.

Sense Organs

Sense Organs

How Does the Nose Work? 

The nose is a sense organ. Our system assists us with our nose to give a sense of smell, and various types of smells. This sense organ additionally helps our feeling of smell. The feeling of smell is otherwise called olfaction. There are smell receptors in our noses. As one takes air in, the air goes into the nasal cavity. Nose receptors help us with the sensation of smell. It is also part of our respiratory system.

The brain then makes an observation of these motivations into a significant smell. During a cold, the body produces bodily fluid which hinders the feeling of smell; this is the justification for why the food we eat during this time tastes boring.

There are different types of smell: fragrant, woody, peppermint, sweet, chemical, lemon, fruity and decayed. Some animals smell foul; in some cases, it is due to a defence mechanism. When they feel unsafe they release a smell that will keep the predator away; for example- Millipede. Stink bird produces a manure-like smell as it feeds on leaves.

The Sense Organ Nose

The Sense Organ Nose

Different Sense Organs


Nose is a sense organ that gives us a sense of smell. We can feel different types of smell because of cells present in our nose. It also plays an important role in respiration. It helps us to breathe air in and expel it out during the process of respiration.


Skin is the largest sense organ. It is connected with the sense of touch. The feeling of touch is likewise referred to as tactioception. The skin contains general receptors which can identify touch, pain, pressure, and temperature. They are available all through the skin. Skin receptors create an impulse, and when enacted, is conveyed to the spinal cord and afterward to the brain.


The tongue helps in receiving different preferences and flavours. The taste buds are available between the papillae on the tongue — these assist in detecting various tastes. The feelings of smell and taste will generally work together. On the off chance that one couldn't smell something, they wouldn’t be able to taste it the same. The feeling of taste is also called gustaoception. 


Ears are the hearable receptors of our body. They assist us with receiving sounds. Our auditory system distinguishes vibrations in the air and this is the way we hear sounds. This is known as hearing or sound inscription. The ears are isolated into three segments, in particular, the external ear, the inner ear, and the middle ear. All sounds are fundamentally vibrations. 


The eyes are the visual sensory organs in our body. These are delicate to light pictures. The eyes differ in colour relying on how much melanin is present in our body. It helps in the sense of sight by identifying and focusing on the light pictures.


Sense organs perceive sensations. There are five sense organs. These include eyes, ears, nose, tongue, and skin. All sense organs have their own functions like eyes help in seeing, the nose helps us smell, the tongue gives the sense of taste and the skin gives us the sensation of touch. We can feel any type of touch because of our skin. Skin also works as a protective organ.

FAQs on How Do We Smell?

1. What regulates our sense organs?

The body's sensory organs send information-carrying nerve impulses to the brain. The brain reacts to these impulses by giving the muscles and glands the necessary instructions to function. The brain correlates input from several sense organs to generate pertinent and intelligent responses.

2. What causes enhanced scent sensitivity?

A hypersensitive person to scents is said to have hyperosmia. This shift in smell is caused by a variety of factors. Some of these consist of migraines, hormonal changes, and genetics. It's possible that hyperosmia will also impact how you taste.

3. What occurs if you inhale/smell something too deeply?

Some people may have a burning feeling when exposed to strong scents, which can induce coughing, wheezing, or other breathing issues. Strong scents can cause headaches, dizziness, and nausea in some people. When an odour persists or keeps happening, it may also have an impact on stress levels, anxiety, and mood.