Activity

This is ONLY a possibility S, so take it for that.  Seizures are sometimes accompanied for some people by an aura or even scents.  Obviously, you are NOT having grand mal seizures, but people can have subclinical seizure activity in their brains.  This could manifest as a sense of disassociation or other perceived manifestations, even if one never has intense enough seizure activity to lose consciousness.

I suppose the danger for you might be if you experienced the disassociation while doing something else that would be precarious, like driving, for instance.  But, at least you have the warning of odd smells.

If it is subclinical seizure activity, a visit with a neurologist at some point is in order.  (Also, I am not advocating CBD as a treatment, but Charlotte’s Web concentrated oil, taken orally, is a strain of marijuana that has been used with young children with very severe seizure disorders, because it has virtually no THC and thus no “high” effect.  I say this as I understand that it is legal in some states.)