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. 

Article
Books
Culture
Education
Wisdom
5 min read

We need libraries: they expose our limitations

These physical monuments to our own ignorance instil knowledge and humility.
Children sit in a library listening to a story
Spellow library children's talk.
Children’s Commissioner for England.

On 19 July 2024, my wife, toddler, cat, and I moved back to our hometown of Liverpool. Ten days later, three children were killed and ten more were seriously injured following a mass stabbing at a children’s dance workshop in nearby Southport. 

In the aftermath, amid widespread misinformation about the killer’s background, riots erupted across the country. With unrest intensifying, on 3 August rioters set fire to Spellow Library, less than two miles away from our new home. The apparent reason for the fire? It contained Qur’ans. Imagine that: books in a library! (There’s an all-too-easy joke about far-right thugs not understanding what libraries are that I’ll try to resist making here.) 

Nothing the country witnessed in those riots matches the unspeakable horror that occurred within that dance studio in Southport. And yet, I found the library fire deeply unsettling. I hadn’t worked out why, until recently.  

I’m a theology lecturer and work from home a lot. I’m often listening to music while replying to emails, planning lectures, or marking essays. Recently, however, I’ve been in a musical rut. My usual stuff feels stale and nothing new catches my attention. I mostly use streaming services, and this week it hit me: the platform is the problem.  

Streaming platforms operate through search engines: I search for an artist, song, or album, and start listening. In other words, I have to know what I want to listen to before listening to it. Platforms might suggest new music, but this is invariably based on what I already like. It very rarely exposes me to anything outside my comfort zone.  

In the build-up to the invasion of Iraq in 2003, then-U.S. Secretary of Defense Donald Rumsfeld was asked about the mythical WMDs that served as the war’s McGuffin. His answer has gone down in political infamy:  

“there are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns—the ones we don't know we don't know.” 

When teaching students, I constantly stress the importance of ‘unknown unknowns’. Good education exposes us to things we don’t know that we don’t know. It gives us increasing awareness of our own ignorance. Streaming services greatly reduce the chances of finding music I don’t know that I don’t know. Instead, I listen to music I know I know, or music I know I don’t know.  

I used to love trawling through music shops, pouring over the vast sea of artists I hasn’t even heard of, imagining my favourite album was buried amid the reams of CD cases. It saddens me that I can’t remember the last time I did that. Music shops are physical monuments to my own ignorance. When I see all the artists, all the albums – even the genres! – I haven’t even heard of, I’m unavoidably confronted with my own ignorance.  

So, too, with libraries. How many times I’ve wandered the stacks of university libraries and thought “I didn’t even know there was a book about this topic!” when picking something off the shelves! And this is their value to students: they are physical monuments to their own ignorance. They instil a passion for knowledge, and a deeper sense of humility, as students are forced to grapple concretely with everything they don’t even know they don’t know

(Incidentally, this is what I’ll tell my wife next time I buy another book I invariably won’t read. I can already imagine her response: “But my love, we have plenty of physical monuments to your ignorance at home already.”) 

I found the destruction at Spellow Library so disquieting. It is a supremely, nihilistic act. It is to reject engaging with our ‘unknown unknowns.’ 

Like music streaming platforms, libraries are increasingly digital spaces. My primary experience of reading nowadays is to type something into a search bar. My reading – just like my music – is increasingly myopic; increasingly confined to the realm of ‘known unknowns’. But true humility is only fostered through engagement with the ‘unknown unknowns’ of our life. We need the physical monuments to our own ignorance. We ignore them – or, as the case may be, set fire to them – at our peril.  

There is a significant spiritual element to this, and this is why I found the destruction at Spellow Library so disquieting. It is a supremely, nihilistic act. It is to reject engaging with our ‘unknown unknowns’; a fearful unwillingness to be confronted by our own ignorance.  

In a famous graduation speech entitled “This is Water” writer David Foster Wallace encourages those present to think about the ‘water’ in which they swim. What is so ubiquitous in life that it goes unnoticed? We might call these ‘unknown knows’: things we simply take for granted. On a theological level, the physical nature of our existence is one such phenomena. That we exist somewhere and somewhen is not a given; both space and time are creatures, too.  

And this ought to make us reflect: why are we made to be physical if we might not have been? The Bible is clear that this physicality is a gift. So much so that God Himself chooses to dwell amongst us in physical form. The Christian story is that, in Jesus Christ, God becomes human. The Christian Gospels go to great pains to stress his physicality. He eats, He sleeps, He cries, He bleeds. He reads from physical scrolls when in the synagogue.  

That God-given physicality means I can surround myself with the depth and breadth of my own creaturely ignorance; with my ‘unknown unknowns’. To my shame, I don’t do this often enough, and my increasingly digital life makes this harder. I have become physically detached from my ‘unknown unknowns’.  

And so, now Spellow Library is reopen, I am going to make a concerted effort to visit and support society’s physical monuments to my creaturely ignorance. They may make me uncomfortable as I am overwhelmed by the extent of my limitations, but they may also just make me humbler. And that is the real gift of our God-given physicality.  

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