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
Culture
Psychology
6 min read

When obsession shakes certainties and challenges beliefs

What happens when questions of belief are subject to obsessive behaviours? The impact of OCD on key life moments.

Paula Duncan is a PhD candidate at the University of Aberdeen, researching OCD and faith.

A close-up of a complex clock mechanism featuring small statues within it.
The Millennium clock tower.
National Museum of Scotland.

I’m eleven years old and I’ve been given a New Testament in our school assembly. This is the first time I’ve owned a copy of the Bible. So far, I’ve only heard it read to me in school or the few times I’ve gone to church with my family. I flick through it that evening, taken by the table at the front that directs you to different verses that speak to how you might be feeling. I find myself reading Revelation. The imagery frightens me. The tone, the threat, the fear, and the condemnation… would this be me if I didn’t believe in the right way? If I didn’t believe enough? I’m terrified of this book, these words, terrified of God, even. Mostly, I’m terrified by my own doubt and uncertainty about all things religious, despite wanting to believe. What if God isn’t real? What if God is and I just don’t believe enough? God will know I’m not sure. I tell myself not to think about it. If I’m to avoid thinking about it, I can never read the Bible again. I accept this as a rule. 

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I’m twelve years old and I’m standing in the National Museum of Scotland in Edinburgh, listening to one of Bach’s minor key concertos playing from the Millennium Clock. To me, it looks like it depicts some sort of hellscape straight from the book of Revelation. Death, suffering, and evil are everywhere in this model with its eerie red glow at the bottom. It brings up all the thoughts I’ve been trying to avoid – “you don’t believe enough” and “this is what hell looks like.” I tell myself to forget about it. If I’m to forget about it, I need to make sure that I never talk about it and don’t tell anyone how afraid of it I am. Talking about it makes it real, I think. I accept this, too, as a rule.  

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I’m thirteen years old and I’m sitting in a church trying to concentrate on the service. I can’t because I keep having the thought that I don’t believe enough. I’m worrying about what the reading might be – I’m still too scared to read the Bible and I can’t prevent myself from hearing it in this space. I’m afraid of thinking that I don’t believe enough, and that God will know because this is God’s church after all. I tell myself that I do not belong in this place if I cannot control my thoughts. If I can’t do that, I can never go to church again. This too, becomes a rule.   

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I’m fourteen years old and I’ve started praying every evening. I’m not sure what prompted this, but I also know that I must do it correctly. If I pray and forget to conclude with “amen”, then it seems obvious that God will continue to listen to my thoughts as if I’ve forgotten to hang up the phone. I try to keep my thoughts corralled and pure when I pray. If I don’t end my prayer, God will hear all my worst thoughts – the ones I am ashamed of, the ones that scare me, the ones that fill me with doubt. I tell myself that I can no longer run that risk. If I’m to prevent this, I shouldn’t pray. Another rule.   

I was scared to say these things aloud – to voice my fears or doubts in case they somehow became worse if I acknowledged them.

I’m now in my late twenties, and I have been diagnosed with Obsessive-Compulsive Disorder (OCD) and I’m slowly unlearning the rules I’ve created for myself over the years. Each of them, in their own way, was designed to keep me safe from harm, safe from thinking about something that frightened me, or acknowledging difficult emotions like doubt and uncertainty.  

It has been a long road to reach that diagnosis. OCD is regularly misunderstood and presented as punchline of jokes – “I’m so OCD!” is one that I’ve heard far too many times when someone simply means that they’re organised. The problem with these jokes is that it disguises the reality and makes it that bit harder for people to recognise what it is they’re really dealing with. OCD-UK, a charity to whom I owe a great deal, describe OCD as follows: “Obsessions are very distressing and result in a person carrying out repetitive behaviours or rituals in order to prevent a perceived harm and/or worry that preceding obsessions have focused their attention on.” 

Obsessions could cover virtually any topic, and everyone will experience compulsions in slightly different ways. I didn’t recognise that I was living with OCD because almost all of my compulsions were mental rituals or avoidance behaviour. I would try and avoid thinking about things, check whether thoughts upset me, avoid reading the Bible… Layers and layers of compulsive behaviour in response to frightening intrusive thoughts that became associated with faith. I was scared to say these things aloud – to voice my fears or doubts in case they somehow became worse if I acknowledged them. I now know to call this “magical thinking” but I still find it difficult at times to accept that I cannot cause something to happen simply by saying it. 

It can be particularly difficult for people with OCD to cope with uncertainty. I can see why anxiety and doubt about the existence of God has been hard for me to tolerate. I also know that I can never achieve absolute certainty and part of learning to live with OCD is learning to accept that and make choices despite it. Last year I attended the International OCD Foundation (IOCDF) Faith and OCD conference and was overwhelmed by the sheer number of people there. So many people with the same worries and doubts as me, and many more who had found that OCD impacted them in different ways.  

But it was hard for a doctor to diagnose me until I could find the words to articulate what I was experiencing. It wasn’t until I started reading books about other people’s experiences with OCD that I started to recognise my own thought patterns, my own fears and doubts in other people’s words. Author and video creator John Green shares a very powerful video titled “What OCD is like (for me)” where he shares what his experience of having OCD and says:  

“I can say what it is like more than what it is.”  

This gives me a little more courage to tell people what living with OCD can be like and represent some of the diverse experiences of the condition. For someone who was too frightened to open a Bible, I think it’s a little ironic that I am now a theologian. My doctoral research project is focusing on faith and OCD, and in particular, how it might affect someone’s relationship with God. I hope to make use of some of my own experience along the way – examining my fear of not being sure enough, my worries that my intrusive thoughts would somehow offend God… I hope that by sharing this, I can raise a little more awareness of an experience that so many of us try to keep secret or just aren’t ready to speak about. 

Through advocacy and research, I’d like to share a little of, as John Green says, what OCD looks like (for me). I’d like to add my voice – now that I’ve found it – to the discussion in the hopes that someone might read this and recognise what they’re going through. And if that’s you? You’re not alone. There is help and there is hope.