Yes, odor can be the cause of many a person's migraine. Migraineurs have issues with being overstimulated, whether it is noise, light, or smell. Anytime you get too much sensory input can set the stage for getting a migraine.

And when you have a migraine that is already in motion - there is often an acute sensitivity to smell. Things that wouldn't bother you before will make your headache worse. For me...any strongly scented perfume, body wash, or shampoo, along with certain foods...I can't stand the smell of.

That can be one of the triggers. I too can get a migraine from smells.

Yes, many smells bother me such as cleaners, perfumes, air fresheners, lotions etc.

Any strong or intense smell can trigger a migraine for me.

Yes. So smells do trigger a migraine for me. And also, I find that my sense of smell is more sensitive just before I get a migraine.

I used to think that certain smells triggered my migraines, and maybe they do, but I realised that I get a very acute sense of smell as a precursor to a migraine as well - it is often the first sign I get that I am starting a migraine, before visual disturbance or nausea set in. Where I live is near fields and when the farmer is muck spreading, that smell is bad enough anyway, but it does make me feel very ill when I have a migraine developing! Perfumes and aftershaves also affect me though, as do food smells.

HUGE TRIGGER!
I get them from perfume.Some people think they have to bathe in it.I often think it should be a law to ban the use of that much crap.I always get the perfume bather in front of my at hockey games and cannot escape or move.I always get a migraine from that.then there is the grocery shopper you can still smell in the isle after they left!
Some cleaners can do it too.Those and the perfumes instant major migraine.

Yup. Bleach definitly. Lysol, arcrilic nails, perms, a composite filling..(yes, the dentise thought I was insane). And anything real super flowery.

RAther than a smell setting off my migrain I get bad smells as a sort of hallucinatory part of my migrain. Kind of like the aura with lights and sound I also get weird, yucky smells.

I do this too lilje...was just talking about that in another forum. Sometimes I smell coffee or a metal-like smell...out of nowhere...and I don't even drink coffee.
~Tonya