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

4 April 2024

4 min read

Remembering red on red

The cultural revolution's factions have a disconcertingly contemporary feel.

Simon Burton-Jones

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

A Chinese stamp depicts a map of the country from which people march holding a little red book

Long Live the Overall Victory of the Great Proletarian Cultural Revolution, stamp, 1968.

Public domain, via Wikimedia.

Modern era China has suffered human loss on an unimaginable scale. The Taiping Rebellion in the mid-nineteenth century cost over 20 million lives, more or less the global total from the Great War of 1914-18. The vicious Japanese occupation in the 1930s led to 15 million Chinese deaths. The famine begun in 1958, precipitated by the Great Leap Forward, caused around 40 million deaths.

For one nation, however large, these are appalling losses. By contrast, the fatalities in the Cultural Revolution (1966-1976) amounted to one million or more. But the impact of this communist insurgency within a communist state is profoundly felt today, for its generation is still alive. The trauma of those years has wounded the bodies and minds of millions; people who are unsure how to come to terms with it because of the uncertainty of what can be safely talked about.

Mao’s incitement to younger people to turn on their teachers and elders in vitriolic criticism and violent attack, including torture and murder, was an attempt to re-boot the revolution by exterminating elements of western capitalism and traditional Chinese authority – the so-called Four Olds of ideas, culture, customs and habits. The humiliation of teachers and parents was profoundly at odds with the Confucian culture of respect for elders, and it was embedded in young minds whose frontal lobes had not fully developed and where empathy was unformed. The ensuing violence, pain and hardship was sickening, encompassing millions.

Many of the bereaved and injured, the perpetrators and the victims, are still alive. Some bury their memories as a way of coping; others search for meaning, but run up against an authoritarian government with new digital tools that make totalitarianism possible. In her book Red Memory (Faber and Faber, 2024), Tania Branigan has produced a masterpiece of literature. Interviewing survivors, bystanders and instigators of the violence, she has produced a history of their guilt and trauma, while reflecting on the uses of memory.

The collateral from this is human rights abuses on an industrial scale, to ensure there is no opposition to the CCP as the true expression of being Chinese.

The word remember is coded with meaning. When we piece together our memories of the past, we re-member them and the members are frequently not put back together again in the way an event happened. This becomes more pronounced with the passage of time and the known tendency for people to make themselves more central to a story than they were at the time. We also narrate the past in ways that burnish our reputation and preserve our conscience. The Cultural Revolution has been reassembled in fragments; there is, and there will be, no initiative like South Africa’s Truth and Reconciliation Commission. People can make of it what they want; but without justice, the losses fester.

The lack of a shared public memory also means the Cultural Revolution can be made to service any goal. Detached from the moorings of truth, it becomes a malleable symbol. Xi Jinping suffered himself. His father was purged, denounced as a counter-revolutionary, and sent to hard work in rural Shaanxi Province. This is his creation myth, and how it made a man out of him. But there are other lessons to be taken from that time which he has strategically and wilfully ignored. The leaders of the Chinese Communist Party (CCP) who followed Mao were determined that never again would one man develop a cult of personality like his, by ensuring limited presidential terms. Xi Jinping has abolished this limit and introduced Xi Jinping Thought in an echo of Mao’s Little Red Book. If there is one thing Xi has taken from his experience, it is the terror that chaos unleashes and the need to avoid it at all costs. The collateral from this is human rights abuses on an industrial scale, to ensure there is no opposition to the CCP as the true expression of being Chinese.

Idolatry is much harder to identify in our own culture, yet it is here we need to do this work

The cult of Mao was idolatrous, usurping Christ. Jesus said he would divide families: ‘father against son…mother against daughter…mother-in-law against her daughter-in-law’. This divisiveness was located in his claim to be the way, the truth and the life. He did not seek to divide families, but knew his claims would do so. Mao intentionally turned families against themselves - the foundation of a civil society - to ensure loyalty to him would not be compromised.

It is easy to identify this several decades on and at the safe distance of several thousand miles. Idolatry is much harder to identify in our own culture, yet it is here we need to do this work. It is also sloppy to make links between the ideological fervour and purity of Maoism and today’s social media culture. There is no direct link, despite some claims. But the story of how groups coalesce righteously and are manipulated into ever more extreme forms of factional purity has a disconcertingly contemporary feel.