What causes an olfactory aura in migraines without a headache?

[William_H]

I’ve been experiencing these strange episodes where my sense of smell gets intensely distorted for a few minutes, like everything smells like burnt rubber or something similarly awful. My neurologist mentioned it could be a type of aura related to migraine, but I don’t get a headache afterwards, just this overwhelming and unpleasant olfactory hallucination. I’m wondering if anyone else has dealt with this specific sensory disruption and what it was linked to for you.

[Brian81]

I’ve had something like that. It would hit for a couple minutes and everything smelled off, burnt rubber or chemical, and then it would fade. No headache afterward in my case either. I started a simple log: when it happened, what I ate, sleep the night before, stress level, and bright lights around. Not a perfect predictor, but it helped me notice patterns and talk to my neurologist with something concrete.

[EllaYJ]

Mine came with a weird moment of confusion, and I worried I was losing my mind. I did an EEG and an MRI just to rule out other things. The doctors said these smell events can be an aura phenomenon tied to headaches, even if you don’t get a headache. It helped when I stopped flinching at every trigger and waited to see if it passed.

[AddisonWL]

Another time I wondered if maybe I just breathed in something odd in the kitchen, but it happened again later in a different place with no obvious smell source. I kept notes anyway, and it did feel tied to a spike in stress. Not consistent enough to chase a fixed cause.

[Dennis25]

Short and practical: when it happens, I sit down, steady my breathing, and wait it out. If it lasts too long or repeats, I call the clinic. It’s not a full seizure or anything I can put my finger on, but it does mess with your sense for a bit.

[Larry_G]

I once had a long smell episode after skipping sleep. It was worse after a stressful week and bright office lights. After reading up, I started protecting sleep and using sunglasses at work. It changed how often it happened, but not guaranteed.

[AdamCH]

I had a brief flare like that and then nothing for months. The doctor suggested it could be an olfactory aura and recommended tracking patterns, but I didn’t pursue meds since the episodes faded.

[Patrick.S]

Do you already track anything else that tends to coincide with these episodes?