Can epilepsy or auras cause auditory, olfactory or visual hallucinations?

Yes: Epilepsy or seizure disoreders can actually cause certain sensations in any of the five sensory areas: vision (visual), hearing (auditory), smell (olfactory), taste (gustatory) and touch (tactile). I have heard that many can tell when they are about to have a seizure. I understand that for some, the smell of burning rubber is present prior to a seizure. Good question.

Yes: Especially if you possess temporal lobe epilepsy.