Dr. O. Mutlu Topal · Medical Doctor · Last updated: October 5, 2026
Written by Dr. O. Mutlu Topal, Medical Doctor (Ankara University Faculty of Medicine)
You step into an elevator, and the previous rider's perfume is still in the cabin. Ten minutes later your temples start to throb. The person next to you smelled the same thing and nothing happened. This is one of the stories physicians hear most often from patients; the person telling it adds, almost every time, “I thought I was exaggerating.”
They are not exaggerating. The link between scent and headache is real, measurable, and a condition with its own name in the medical literature; it just does not work the same way in everyone, which is why the person in the next seat is fine.
How does a scent trigger a headache?
There are two separate pathways, and what you should do depends on which one it is.
The migraine pathway. In a person with migraine, the brain works with a lower threshold for stimuli. Light, sound, lack of sleep, hunger and scent are stimuli that cross this threshold. Scent skips the thalamus, the stop the other senses pass through, and takes a shortcut from the olfactory bulb to the limbic system (the center of emotion and autonomic response). That is why scent sets the migraine mechanism in motion faster than the other senses do. Although it varies from study to study, roughly half of people with migraine report that scents start an attack (Kelman, 2007); the rate of being bothered by scents during an attack is higher still.
The irritation pathway. Volatile chemicals such as perfume, paint, paint thinner and bleach directly stimulate the trigeminal nerve endings around the nose and eyes. This causes a pressing pain in the forehead and temples even in a person who does not have migraine; burning in the eyes and a runny nose come with it. Once you move away from the scent, it passes within half an hour to an hour.
To tell them apart, look at this: if the pain is one-sided, throbbing, comes with nausea and discomfort from light, and moving away from the scent is not enough, it is the migraine pathway; if it is on both sides, feels like pressure, comes with eye and nose irritation, and passes when you get out into the air, it is the irritation pathway.
| Migraine pathway | Irritation pathway | |
|---|---|---|
| Who gets it | People with migraine | Also people without migraine |
| Type of pain | One-sided, throbbing | Two-sided, like pressure; in the forehead and temples |
| What comes with it | Nausea, discomfort from light | Burning in the eyes, runny nose |
| After moving away from the scent | Moving away may not be enough | Passes within half an hour to an hour |
Before you blame the scent: carbon monoxide
Do not skip this paragraph. If headache, nausea and dizziness have started in a place with a closed garage, a running vehicle, a heating stove, a gas water heater or a generator, and others in the same place have similar complaints, think carbon monoxide, not scent. Carbon monoxide has no odor; thinking “there is no smell, so there is no problem” is the most dangerous mistake. Leave the place at once, open the windows, and call 112 (the emergency number in Turkey; elsewhere, call your local emergency number). In Turkey, every winter brings deaths caused by stoves and water heaters.
Which scents cause headaches most often?
Everyone's list is different; in the publications and in what patients describe, the order is more or less as follows (Kelman, 2007; Sjöstrand et al., 2010):
- Perfume and cologne; the heavy, sweet-scented ones lead the list
- Cigarette and hookah smoke
- Gasoline, diesel, exhaust
- Paint, paint thinner, varnish, the smell of new furniture and carpet
- Bleach and strongly scented cleaning products
- Frying oil, onion, garlic
- The new-car interior smell and strong room fragrances
It makes no difference whether the scent is “nice” or “bad.” A perfume you love can start an attack too, because the brain reacts to the chemical load of the scent, not to its aesthetics.
How do you get rid of a headache from perfume?
If the pain has started, in this order:
- Leave the place where the scent is; opening the window is not enough, change rooms.
- In fresh air, breathe deeply through your nose for a few minutes.
- Drink a glass of water; dehydration is a headache trigger in its own right, so you at least rule out one variable.
- Apply a cold compress (to the forehead or the back of the neck) for twenty minutes.
- If you have a migraine diagnosis, take the attack medication your physician gave you early; the later a migraine medication is taken, the less it helps.
- Rest for half an hour in a dark, quiet place.
The way to prevent an attack: a trigger diary
The tool that helps most with scent-related headache is a notebook or a note on your phone. When the pain starts, write down three things: where you were in the last two hours, what you smelled, and what you ate and how much you slept. After three or four attacks your own list emerges. Most people see that the list holds not a single scent but a two-part combination such as “scent + lack of sleep” or “scent + hunger”; the precaution is then taken according to that combination.
At home and at work: spraying perfume on clothing and not on the neck, in a small amount; using strongly scented cleaning products while airing the room; reviewing the room-fragrance habit; not hanging an air freshener in the car. Explaining the situation to the people around you helps as well; saying “your perfume bothers me” feels rude to most people, but “I have migraine, and scents start an attack” is a sentence everyone understands.
When should you see a doctor?
The emergency room or 112, without waiting:
- The most severe headache of your life, one that peaks within seconds
- Fever and a stiff neck together with the pain
- Loss of vision, speech disturbance, numbness or weakness on one side
- Pain that starts after a head injury
- Headache and nausea in more than one person at the same time in a closed space (carbon monoxide)
Make an appointment with neurology:
- A headache that starts for the first time after the age of fifty
- Newly started pain during pregnancy, in the postpartum period, or in a person whose immune system is suppressed
- Pain that starts with exertion, coughing or straining, or that wakes you from sleep
- Starting to smell odors that are not present (burning, rotten)
- Four or more attacks a month; this is not a danger sign, it is a sign that the time for preventive medication has come
Even in a person with a migraine diagnosis, these symptoms call for a new evaluation.
Why does someone without migraine get a headache from scents?
The trigeminal irritation pathway exists in everyone. If the volatile organic compounds are concentrated, the space is closed and the exposure is long, pain, burning eyes and mild nausea appear in a person without migraine too. A freshly painted home, new furniture and a heavily perfumed store are the best-known examples. Ventilation and distance are enough most of the time. This type of pain is not considered a sign of a lasting problem, but if it recurs often, the exposure at work or at home needs to be reduced; the closed-garage and stove scenario, however, belongs under the carbon monoxide heading above, not under the irritation heading.
Should a person with migraine give up scented products altogether?
No; this needs to be said clearly, because some patients wear themselves out trying to build a scent-free life. The goal is not zero scent; it is to avoid the scents on your list at your weak moments. If you are short on sleep, hungry or in your menstrual period, the threshold drops; not going into a perfumed store that day may be enough. On a day when you are rested and fed, the same store may cause no problem. That is why the trigger diary is valuable: it shows which scent starts an attack on its own and which one only when combined with something else. There is also the “habituation” debate: some researchers argue that low-intensity, controlled exposure may raise the threshold over time; but for scent there is no reliable study pointing in that direction. Do not try this on your own; talk to your physician.
Scent-related headaches in children
In children, migraine looks different from the way it looks in adults: the pain is mostly two-sided and short, abdominal pain and nausea take precedence over the pain, and the child says “I feel sick to my stomach” or “the smell bothered me” in place of “my head hurts.” At school, the smell of paint, toilet cleaner, the cafeteria, and the room fragrance in the school bus are the triggers described most often. A clue for parents: if the child keeps coming back with a headache after a certain place or a certain class, ask about scent. But if the following symptoms are present, think of pediatric neurology without waiting, not of scent: vomiting as soon as the child wakes in the morning, pain that wakes the child at night, pain that keeps getting more frequent, a balance problem, a vision complaint, a change in behavior or in school performance. If these are absent, an evaluation by a pediatrician or pediatric neurology is still needed; finding the trigger, and not getting the child used to painkillers, is an even higher priority in children than in adults.
When does preventive treatment come up?
If avoiding scents and attack medication are not enough, that is, if there are four or more attacks a month, if the attacks disrupt work and school life, or if attack medication is needed on more than ten days a month, neurology considers preventive treatment. These are medications that aim to reduce the number of attacks; most are taken by mouth every day, and some are given as monthly or three-monthly injections. There are several different drug groups, and the choice is made according to the person's other illnesses, age and side-effect profile. As the number of attacks falls, the intolerance to scents also recedes in many patients; this is explained by a drop in the brain's general excitability. Making this decision requires a neurology examination; this article does not replace that decision.
Sources
- Kelman L. The triggers or precipitants of the acute migraine attack. Cephalalgia. 2007;27(5):394–402. doi:10.1111/j.1468-2982.2007.01303.x
- Sjöstrand C, Savic I, Laudon-Meyer E, Hillert L, Lodin K, Waldenlind E. Migraine and olfactory stimuli. Curr Pain Headache Rep. 2010;14(3):244–251. doi:10.1007/s11916-010-0109-7
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Other articles by Dr. O. Mutlu Topal: What Causes Scent Sensitivity? · Can Perfume, Detergent and Cleaning Product Scents Cause Allergies?
Frequently Asked Questions
Does perfume cause headaches?
Yes. In people with migraine it can start an attack; in people without migraine it can cause a temporary headache by irritating the nerves around the nose and eyes.
How can you tell a scent-related migraine?
If a one-sided, throbbing pain that goes with nausea and light sensitivity starts within half an hour to a few hours after a scent, and this recurs several times, it is most likely scent-related migraine; the definitive diagnosis is made by neurology.
Is it too much to ask my spouse to change perfume?
No. Constant exposure inside the home is one of the most common triggers; explaining it with “I have migraine” is enough most of the time.
Does the smell of onion cause headaches?
It can. In some people, the sulfur-containing volatile compounds of onion and garlic both trigger migraine and irritate the nose.
How do you get rid of a headache from paint smell?
Leaving the place for fresh air, with water and rest, it mostly passes in one to two hours. If it does not pass, if there is nausea and vomiting, or if everyone in the same place was affected, see a physician.