How Your Sense of Smell Changes With Age

Your sense of smell is not a fixed piece of equipment. It develops through childhood, peaks somewhere in early adulthood, shifts with hormones and health, and gradually declines in later life, usually becoming noticeable from around the sixties onward.

That last part explains one of the most common and most unfair arguments in fragrance: the complaint that an older relative wears far too much perfume. Frequently they are applying a dose that smells correct to them, and the disagreement is about equipment rather than taste.

Key Takeaways

• Smell develops early and works from birth. Newborns recognise familiar smells within days.
• Sensitivity generally peaks in early adulthood and holds through middle age.
• Decline typically becomes noticeable from the sixties. Gradual, and highly variable between individuals.
• Hormonal changes shift perception. Pregnancy is the most dramatic example.
• Use it or lose it applies. Active, curious smelling is associated with better preservation.

Table of Contents

1. Childhood: learning what smells mean
2. Early adulthood: the peak
3. Hormones and the pregnant nose
4. Middle age: taste changes more than the nose does
5. Later life: what actually declines
6. Why older noses often wear more
7. Keeping your nose sharp
8. Frequently Asked Questions
9. Conclusion

Childhood: learning what smells mean

Smell is working from the beginning. Newborns show recognition of familiar scents within days, and early smell experiences are formed before language is available to label them.

That timing matters more than it sounds. Because early scent memories are encoded without words, a smell later becomes the only reliable key to them, which is why childhood scent memories feel so vivid and arrive so suddenly. The science behind scent memory covers the mechanism.

Children are also less fixed about what is pleasant. Reactions to smells that adults find repellent are considerably more neutral in young children, and much of what we treat as instinctive disgust is learned.

Early adulthood: the peak

Sensitivity is generally at its highest in the late teens through the twenties and thirties. Detection thresholds are low, discrimination is good, and recovery from adaptation is quick.

This is also when most people build their core scent associations, which is why fragrances from your late teens and twenties carry disproportionate emotional weight for the rest of your life. How to choose a signature scent and best perfumes for women in their twenties both sit in this territory.

Worth noting: peak sensitivity is not the same as peak skill. Recognition and vocabulary are learned, so a trained fifty year old will identify far more in a fragrance than an untrained twenty year old. Training your nose is the variable you control.

Hormones and the pregnant nose

Hormonal state affects smell perception, and pregnancy is the clearest case.

Heightened sensitivity during pregnancy, particularly early on, is widely reported and frequently accompanied by strong aversions to specific smells. Coffee, cooking smells and certain fragrances are common triggers. The experience is genuine, it varies enormously between individuals, and it usually settles.

The practical consequence is that a fragrance someone has loved for years can become unbearable for a period and then acceptable again. Perfume and pregnancy covers what that means for what to wear.

Hormonal shifts at other life stages are also reported to affect scent perception and preference, though the picture is less well characterised.

Middle age: taste changes more than the nose does

Through the forties and fifties, measurable sensitivity usually holds up reasonably well. What changes more is preference.

The common pattern is a drift away from sweetness and toward dryness, structure and complexity. People who wore bright fruity florals at twenty-five frequently find themselves in chypre, woody or leather territory two decades later. That is partly exposure, since novelty wears off and familiar things stop being interesting, and partly a genuine shift in what registers as satisfying.

Why your taste in perfume changes covers the arc, and best mature but modern perfumes covers the practical question of what to wear through it.

Later life: what actually declines

Reduced olfactory function becomes considerably more common with age, and it typically becomes noticeable from around the sixties, with prevalence rising thereafter. Several things contribute.

Fewer functioning receptor neurons. These cells regenerate throughout life, and the rate of replacement slows.

Changes in the nasal passages and in mucus production affect how molecules reach the receptors.

Cumulative damage from infections, injuries and environmental exposure adds up.

Medications and health conditions affect smell more often than most people realise.

The decline is gradual and highly variable. Plenty of people in their seventies have a better sense of smell than people decades younger, and the range within any age group is wide.

One important point stated carefully: a change in sense of smell has many possible causes, and some are worth investigating rather than assuming age. If it comes on suddenly, or is accompanied by other symptoms, it is worth seeing a doctor. When a change in your sense of smell means something covers this properly.

Why older noses often wear more

Here is the practical consequence, and it deserves more sympathy than it usually gets.

If your detection threshold has risen, a fragrance has to be present at a higher concentration before you notice it. Applying until you can smell it therefore means applying more than someone with a lower threshold would need. The wearer is not being inconsiderate. They are calibrating to the only instrument they have.

Three things follow.

The complaint is usually unfair. It is a perception difference rather than a taste failure.

Fixed rules help. Counting sprays rather than applying by feel solves it entirely. Two sprays is two sprays regardless of what your nose reports.

Format helps. Perfume oils and lighter concentrations reduce the gap between what the wearer perceives and what the room perceives.

The same logic applies to anyone with specific anosmia at any age, as why people smell things differently covers. And it is precisely why what to do about an overspray is such a universally useful piece of knowledge.

Keeping your nose sharp

The evidence here is encouraging without being conclusive, and the interventions cost nothing.

Smell things deliberately. Active attention to smells, rather than passive exposure, is associated with better performance. Training your nose with your spice rack is the easiest route in.

Keep variety. Wearing one fragrance for a decade is comfortable and does nothing for discrimination. A rotation keeps you noticing.

Structured smell training is used as an approach for reduced sense of smell and is harmless to do preventively. See how smell training works.

Look after general health. Nasal conditions, smoking and untreated infections all affect smell.

Cook, and pay attention while doing it. Every meal is retronasal practice, as why taste is mostly smell explains.

Logging what you wear and what you notice is a genuinely useful long-term record here. In WhatScent you can look back over months and see whether what you detect in a familiar fragrance is changing, which is a far better signal than trying to remember.

Frequently Asked Questions

Q1: At what age does sense of smell decline?

A: Reduced olfactory function typically becomes noticeable from around the sixties, with prevalence rising in later decades. The decline is gradual and varies enormously between individuals, and many older people retain an excellent sense of smell.

Q2: Why do older people wear more perfume?

A: Because a higher detection threshold means the fragrance has to be present at a greater concentration before they notice it. Applying until it registers therefore produces a larger dose than someone with a lower threshold would use. It is a perception difference rather than a matter of taste.

Q3: Does pregnancy change your sense of smell?

A: Heightened sensitivity and strong aversions to specific smells are widely reported, particularly in early pregnancy. The experience varies considerably between individuals and usually settles, and a fragrance that becomes unbearable during that period frequently becomes wearable again afterwards.

Q4: Can you slow down smell loss with age?

A: Deliberate, varied and attentive smelling is associated with better preservation of olfactory function, and structured smell training is used as an approach for reduced sense of smell. General health, including nasal conditions and smoking, also matters.

Q5: Should I see a doctor about losing my sense of smell?

A: Yes, particularly if the change is sudden, persistent or accompanied by other symptoms. Smell loss has many causes, including some that are treatable, and attributing it to age without checking means missing anything else that might be going on.

Conclusion

The nose you have at sixty is a different instrument from the one you had at twenty, and understanding that changes how you read both your own habits and everyone else's. It also makes a strong case for counting your sprays rather than trusting your nose.

Download WhatScent on iPhone or Android, keep a record of what you wear and what you notice, and give yourself something better than memory to compare against.