Why Does a Single Scent Take Us Back to Childhood in a Second?

You open the wardrobe and smell lavender. In a second, you're no longer in your own home. You're somewhere else, maybe at your grandmother's, among neatly folded bed linen and little sachets of dried lavender.

Or someone peels an orange and, without warning, you remember a winter morning, the school holidays or a table no one has sat at for years.

You didn't consciously call up that memory. The scent did it before you could.

Scent doesn't ask if it may come in

A photograph you have to look at. A song you have to hear. A scent often arrives before you've even managed to name it.

When we breathe in, scent molecules reach the receptors in the nose. The signal then travels to the olfactory bulb, the part of the brain that processes smells, and from there very quickly to the areas linked to emotion and memory. Among them are the amygdala and the hippocampus.

That's why a scent sometimes brings more than just the information “This is lavender” or “Someone's making coffee.” The whole package arrives with it. An image, a feeling, a place, a person, even the mood we were in at the time.

Unlike most other sensory information, the initial processing of smell doesn't first pass through the brain's usual relay station, the thalamus. The route to the centers for emotion and memory is shorter and more direct.

Put simply: the nose has a shortcut to the past.

A Proustian moment can happen to anyone

This phenomenon even has a name: the Proust effect.

It's named after the French writer Marcel Proust. In his novel, the taste of a madeleine dipped in tea sets off a whole chain of long-ago memories. Although taste plays a part in that scene, much of what we experience as the aroma of food actually comes through the sense of smell.

But you don't need a French cake.

The smell of freshly cut grass, wet asphalt after a summer downpour, the cream your mom used, smoke from a stove or the soap in an old bathroom is enough. One breath and suddenly you know what a place you haven't thought about in years looked like.

Such memories often aren't tidy stories. Sometimes you can't even say where you were or how old you were. You just feel a familiar warmth or unease. As if the body remembered before the words did.

Why do scents so often take us back to childhood in particular?

A review of research on scent-evoked memories shows that, more often than memories triggered by words or images, they come from an earlier period of life. They cluster especially around the first decade.

Childhood is full of first encounters. For the first time we recognize the smell of home, of a person, of food, a garden, the sea or school. The brain doesn't file the scent away as a separate label then. It ties it to whatever was happening at that moment.

That's why to one person lavender means calm and clean bed linen, and to another a hot summer and the harvest. To one person the smell of oranges means Christmas, and to another a morning when he missed the bus because the juice ended up all over his shirt.

The same scent. A completely different story.

Scent memories can be stronger than a photograph

Research described in Rachel Herz's expert review shows that people often experience autobiographical memories triggered by scent as more emotional and more vivid than memories triggered by words or images. A person doesn't just remember the event, but has a stronger sense of having returned to the original place and the original moment.

That's probably also why we love looking at old photographs, yet one unexpected scent can completely disarm us.

A photograph says: “This happened.”

A scent says: “This is what it was like to be there.”

Not all scent memories are pleasant

We love talking about the smell of grandma's cakes and summers by the sea, but the nose doesn't keep only the nice things. The smell of a hospital, a particular perfume or a room where something painful happened can bring back unease too. The Cleveland Clinic notes that smells can also trigger unpleasant or painful memories, especially when they were linked to strong emotions.

So it's no wonder if you find a certain scent off-putting even though everyone around you loves it. Maybe the problem isn't the scent at all. Maybe it's the story your brain filed away with it.

Can we create new scent memories?

We can create new links between scents and moments. That happens all our lives anyway, usually without any plan.

The smell of coffee can become the sign of a peaceful morning. A particular soap can remind you of your first apartment of your own. The smell of the cream you use in the evening can become tied to those quiet five minutes after a day when everyone needed something from you.

You don't have to turn it into a special ritual. It's enough to pause now and then and really smell what's in front of you.

At Mala od Lavande we live surrounded by scents all the time. Lavender, orange, bergamot, lemongrass and immortelle are part of our work, but over time they become a small private archive of our days too. One scent remembers the cooking, another the filling of the containers, another a parcel we were packing late at night.

Maybe that's why people so often choose the very same scent again. It doesn't have to be only because it smells lovely. Maybe, in the meantime, they've stored something of their own in it.

Which scent keeps your story?

If you could open one memory right now using only a scent, which scent would it be?

Lavender from the wardrobe? Freshly baked bread? Sunscreen? Damp earth? Orange peel? The perfume of someone you haven't seen in a long time?

The answer probably says less about the scent itself, and more about you.