Article
Culture
Psychology
Weirdness
5 min read

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.
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
Digital
4 min read

Filterworld: algorithmic anxiety is flattening our culture

The rule of vanilla lets our unfeeling gadgets decide what’s best for us.

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

A podcast guest speaks in front of a mic.
What's next on the playlist?
Sebastian Pandelache on Unsplash.

Here’s another diagnosis to add to modern malaise: algorithmic anxiety.  It’s described by Kyle Chayka in his excellent book Filterworld (Heligo Books, 2024) as the: 

 …awareness that we must constantly contend with automated technological processes beyond our understanding and control, whether in our Facebook feeds, Google Maps driving directions, or Amazon product promotions. 

We don’t understand algorithms.  Even if we did, we wouldn’t know how they actually work on us as every tech company keeps it a secret, lest competitors learn from them.  This has led to the algorithm becoming the century’s newest bogeyman, a phantom we can reference in conversation to make us sound tech savvy and culturally knowing even while we remain in the dark. 

‘Algorithmic has become a byword for anything that feels too slick, too reductive, or too optimised for attracting attention’.   

Kyle Chayka

One of the oddest outcomes of the ascendency of the algorithm is the seemingly diametric effects on politics and culture.  In politics it has polarised people, sorting us into opposing camps and then ensuring we hear only good things about our ‘side’ and only maddening things about the ‘opposing’ side.  Instead of calmly listening to a different view, we hurl insults, as performative as Prime Minister’s Question Time and about as enlightening. 

Something different is happening with culture.  Here, the algorithm makes culture more homogenous; in the words of Kyle Chayka, it is ‘flattened’.  The basic rule of what he calls Filterworld is that ‘the popular becomes more popular, and the obscure becomes even less visible’.  It is a strange re-mix of Jesus for the digital age: ‘to all those who have, more will be given…but from those who have nothing, even what they have will be taken away. 

The life of an Instagram post is said to be determined in the first five minutes.  If it has engagement, it can be sure of more; if it gets none, it will sink.  Visibility on social media is vital for artists of all kinds, because this is where all publicity begins.  Artists try and game the system, figuring out what kind of content the algorithm will promote.  In the process, their creative expression is subtly compromised.  People begin to write in a style that gets attention, and what gets attention is decided by the algorithm.  Those who tweet will know how the short, pared back medium starts to influence their life away from X. Musicians know that art which is safe and mainstream – the public’s crowded middle where performers like Ed Sheeran have thrived – is likely to succeed.   

‘Much of culture now has the hollow, vacant feeling of having been made by algorithm’ according to the cultural commentator Dean Kissick.  Chayka observes that: ‘algorithmic has become a byword for anything that feels too slick, too reductive, or too optimised for attracting attention’.   

It is often at the margins that breakthroughs emerge; art that makes us see this world in a new and divine light.   

There is a valid counter to this development.  Previously, what we read, heard and saw as cultural consumers was determined by a small set of experts who filtered content for us.  These experts were often drawn from a narrow section of society who inevitably brought their own biases to bear.  While this may be true, it is hardly a triumph for the public to have an unfeeling gadget decide what’s best for them, based on what we have liked before and what seems to appeal to most people.  At the ice cream vendor, this is like reaching for vanilla every time.   

The truth is, in necessarily surrendering to the algorithm (for what alternative is there online?) we miss huge volumes of culture that might appeal to us.  It is about as effective as deciding what sea life we like based only on what pops up to the surface of the water. 

The best art is not always the most popular and there is a risk that the divine spark of invention that the creator God has placed within each of us – the unlimited potential of being made in the image of God – will not be fanned into existence as often as it could be.  Chasing likes is no substitute for patient inspiration.  It is often at the margins that breakthroughs emerge; art that makes us see this world in a new and divine light.   

‘Behold, I am making all things new’ says the one who sits on the throne in Revelation.  That algorithms are making all things similar is the reality we are learning to live with.