Why smell jumps the queue when it comes to memories

Smells hardwire deep into the brain, writes Henna Cundill, as she explores why they jump-start such vivid memories.

Henna Cundill

Henna is a researcher with the Centre for Autism and Theology at the University of Aberdeen.

An autumnal scene of a church yard and church framed by leafless trees.

'The smell of dust and damp stone will always cry “safety!”'

Jakub Pabis on Unsplash.

When I was a 22-year-old undergraduate my mother died quite suddenly. I can't remember the name of the undertakers we used, nor the chaplain who took her funeral. I can no longer visualise what any of their faces looked like. I know I visited the chaplain’s house to plan the funeral, but I can't remember exactly where that house was. What sticks is that the day of the funeral was a sultry summer's day, and both the chaplain and the undertakers smelt of perspiration. To this day there are moments where I catch that same whiff of man-sweat in some other location, and for a fleeting second, I am a bewildered 22-year-old once more.

Here is another memory. I attended a tiny, rural Church of England primary school in the middle of England. At the end of each school year, all of us donned our little Wellington boots, which smelt faintly of slurry (since this was dairy-farming country) and sweaty feet. Then we lined up in a crocodile and trudged through the bluebell-wood (damp leaves) and skirted the edge of fields (silage, which stings the nose) covering the mile or so between our school building and the village church.

We would enter the church grounds through the back field, hurrying through an eerily muffled graveyard with tombstones towering far above our heads and the grass disturbingly lumpy beneath our little feet. To the chidings of “Quickly!” and “Quietly!” we children scurried down a gravel path, away from this unsettling place of death, to reach the cool sanctuary of a little church, and the comforting smells (for me, at least) of damp stone and dusty hymnbooks.

Others may not have the same associations, but for me the smell of dust and damp stone will always cry “safety!” and the reassurance that “there are no ghosts in here!” in contrast to that troubling graveyard. From death to life. Yet, at the same time, getting stuck with my nose close to some man’s whiffy armpit on the Tube will forever insinuate that I am just a child pretending to be a grown-up, out of my depth, overwhelmed with one thousand decisions to make (“What flowers do you want for her coffin?”) and no-one to advise. In the midst of life, death again.

On reflection I will know that my emotions are being manipulated by my nose, in ways which are more or less than helpful depending on the circumstances.

Of course, I am not 22 years old and lost anymore, no matter what that man’s armpit tries to tell me. My rational mind knows better, but my rational mind doesn’t get a say – or doesn’t get the first say anyway. This is because smell is the only one of our senses that bypasses the thalamus (the brain’s ‘filtering gate’ that decides which part of the brain needs to respond to sensory input) and goes straight to the limbic system, where emotional memory is stored.

Sometimes it is very obvious that this is taking place, such as in the examples given above. On reflection I will know that my emotions are being manipulated by my nose, in ways which are more or less than helpful depending on the circumstances. But it can happen in more subtle ways too. Supermarkets infamously pump out smells to influence our buying choices, and we’re trying to sell our house right now, so we’ve been brewing a whole lot more coffee than we ever usually would.

Intriguingly, scientists don’t really know why the human sense of smell jumps the queue when it comes to cognitive processing. There are biological theories, such as that the smell of predator could wake up our ancestors while they were sleeping and/or could allow them to follow a scent trail quickly when fleeing danger or seeking food. There are social theories too, such as that we don’t have a lot of good words to describe smells, so the brain just doesn’t bother trying to analyse them. Whatever the truth of the matter, the reality is that (whether we like it or not) our noses are an emotional trip-hazard.

When I walk through those great oak doors there is a moment, a glitch in the matrix, when the unmistakable smell of church hits my nose. Dust, damp… a little hint of mouse.

I can’t help wondering what this tells me about my religious practice. Do I go to church because I have made a cognitive decision to worship God each Sunday? Or do I go to church because I am following my nose, getting away from a world full of armpits and responsibilities to a place where I am a seven-year-old girl, all gingham dress and wellies, feeling safe. If so, does it matter?

Truth is, my mind can give me a dozen reasons not to go to church every single week. In fact, two dozen reasons. More. It has always been a busy week; I’m always behind on work. The house always needs a sort out and the car is never washed. But because certain congregation members are normally counting on me for certain things, and because I’m still pretending to be a grown up, I typically drag myself out the door, and off to church I go.

And week on week, without fail, when I walk through those great oak doors there is a moment, a glitch in the matrix, when the unmistakable smell of church hits my nose. Dust, damp… a little hint of mouse. My body registers this before my mind; my shoulders drop a little of their tension. Even if it’s just for a fleeting moment, I start to feel that I know for sure what is absolutely real in my life and what is just pretend.

Is this knowledge irrational – since it doesn’t come from the cognitive part of my mind? Or is there a God who knows that the cognitive part of my mind sometimes tells me all sorts of untrue and unhelpful things. Is there a God who is choosing to reach out to me in more subtle, more ancient ways?

I can only wonder if I have been following my nose all this time, without even noticing. Drawn along by an ancient scent trail that leads me time and time again…this way…and that way…until I reach a place where there is safety, and bread.

Review

Books

Culture

Politics

9 April 2025

4 min read

Is it OK to pray for the death of a dictator?

What happens when the mighty lose their thrones.

Simon Burton-Jones

Simon is Bishop of Tonbridge in the Diocese of Rochester. He writes regularly round social, cultural and political issues.

Bullet holes on a wall and white paint outlines mark the site of an execution

The wall where Nicolae and Elena Ceausescu were executed.

NPR.

The end, when it comes, can be nasty, brutish and filmed.

Muammar Gaddafi, self-styled Brotherly Leader and Guide of the Revolution, spent the last moments of his life cowering in a Libyan sewer after an air strike on his convoy. On discovery, a mob subjected him to some ghastly final abuses before death – the kind of ending he had mercilessly condemned thousands to. It was almost biblical in its parabola, and it was recorded on a wobbly camera.

But it was not the first of its kind in this generation. On Christmas Day 1989, the disfigured face of Nicolae Ceausescu was broadcast on TV following his summary execution by hastily assembled opposition forces in Romania. Only days previously, he had been an unassailable dictator.

Vladimir Putin has spoken about Gaddafi’s ending, and it clearly troubles him, but perhaps Ceausescu’s death is lodged in the dark recesses of his mind because it was the one bloody end of all the communist leaders of eastern Europe.

Being a dictator is an all-consuming job. Too many domestic and foreign enemies are made along the way for the dictator to drop their vigilance. And their downfall often comes at the hands of those closest to them; by definition, these people know the dictator’s movements and weaknesses better than others and are best placed to exploit them. The military must be equipped to suppress dissent, but give it too much power and the generals pose a risk to the dictator. Yet if the military lacks the hardware, control of the population becomes harder. Many dictators surround themselves with specially trained loyal guards to defend against the military, but the rule of terror means no-one speaks the honest truth and so risks appear everywhere. No wonder dictators are usually paranoid and themselves racked with the fear that a culture of capricious violence induces in everyone.

These and other theories are explored by Marcel Dirsus in his compelling book How Tyrants Fall (John Murray, 2025). Dirsus notes how dictators require money, weapons and people to survive in office and for the elites around them to believe these goods will remain in place. They also need to immerse the surrounding elites in blood guilt, so that their fate becomes entwined with the dictator’s; Saddam Hussein compelled others to join him in the murder and execution of opponents.

For Dirsus, there are two ways to topple a tyrant. The most direct is to take them out, but this is rarely straightforward. Coup attempts are often shambolic in their planning and even well-orchestrated ones usually fail; the consequences for those implicated are always horrendous. The second route is patient and pragmatic, looking to weaken the tyrant, strengthen alternative elites and empower the masses. External powers often have minimal influence unless, like the US in Iraq, the country is invaded and the tyrant deposed. Sanctions often fail to hurt the elites; a state’s geographic proximity to the tyrant’s nation can be useful, as it gives a base from which opponents of the regime can work.

Modern technology is changing the face of political action, making it easier for large groups to mobilise against regimes, as seen in the short-lived Arab Spring. It also enables dictators to track opponents more successfully than even the feared Stasi in East Germany. Right now, it feels like the tyrants are ahead in this game.

Shortly after the full-scale Russian invasion of Ukraine in February 2022, a friend said to me that he was praying for Putin’s death or downfall. I asked him how sure he was that the person who replaced Putin would be better. If the pragmatic route for toppling a dictator involves strengthening different elites and empowering the masses, the likelihood is that the elites will take over, not the masses. Dictators never allow the components of civil society to form; democratic institutions take decades to build. And they rarely anoint successors in advance, for fear alternative power bases are created. When dictators fall, it usually leads to initial chaos and violence before another elite can establish itself from which a new dictator will emerge.

In her inspired song of praise at the news she would give birth to the long-awaited Messiah, Mary observes how God ‘has brought down the powerful from their thrones and lifted up the lowly’. It is a role reversal typical of St Luke, recorder of Mary’s song, a gift of eschatology many want realised today, not just in the world to come. When the powerful are brought down from their throne today, they are typically replaced by the next most powerful person, and if the throne remains vacant or is contested, what follows often feels like the spirit that went out of a person in Matthew Gospel returning with seven other spirits more evil than itself, meaning ‘the last state of person is worse than the first’.

This need not be a counsel of despair, but a call to informed intercessory prayer which is short on controlling advice for God’s geo-political strategy, and long on the wisdom and patience of the one throne that endures.

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