The smell of fresh food, flowers, rain or even smoke tells us a lot about the world around us. This topic is popular because children are curious about how the nose works and why smells can trigger strong memories and feelings.
Our nose does much more than help us smell — it also helps us breathe safely.
What is smell?
Smell is one of our five senses.
It helps us detect tiny particles in the air called odours.
When we breathe in, these particles enter the nose and send messages to the brain.
How the nose helps us smell
Inside the nose:
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Air passes through nasal passages
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Smell receptors detect odours
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Signals are sent to the brain
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The brain identifies the smell
This happens very quickly, often in less than a second.
Why smells feel strong
Smell is closely connected to the part of the brain that controls:
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Memory
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Emotions
That’s why a smell can remind you of:
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A favourite meal
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A place you visited
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A happy or scary moment
How smell keeps us safe
Smell helps protect us by warning us about:
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Spoiled food
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Smoke or fire
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Gas leaks
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Dirty surroundings
Without smell, it would be harder to notice danger.
How the nose helps with breathing
The nose also:
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Warms the air we breathe
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Cleans dust and germs
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Adds moisture to air
Tiny hairs and mucus inside the nose trap dust and germs before air reaches the lungs.
Why smell changes sometimes
Smell can change because of:
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Cold or flu
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Blocked nose
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Strong pollution
This is usually temporary, and smell returns once the nose heals.
How kids can keep their nose healthy
Children can protect their nose by:
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Keeping hands clean
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Avoiding strong chemicals
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Not putting objects in the nose
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Breathing clean air
Why kids should care
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Smell helps enjoy food and nature
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It keeps us safe
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Understanding senses builds body awareness
Teachers say learning about senses helps children understand how the body protects and guides us.
Fun fact
Humans can recognise thousands of different smells, even if they can’t name them!
In short: The nose helps us smell, breathe and stay safe.
Learning takeaway: Smell is a powerful sense — it connects us to memories, warns us of danger and helps us enjoy the world around us. 🌼👃
