Good point.
My own experience with vertigo was totally out of left field. I suddenly could not process objects moving in my visual field without nausea and a feeling of falling. It happened when I was in church one day, and I could barely manage the five minute drive home. My doctor ordered me not to drive until he cleared me. This was later determined to be the after effect of a head-cold. The scary part was that I had been well past the cold for over two weeks when this vertigo hit. Instead of having it happen in church, I could have instead been behind the wheel of a car, or up on a ladder, or operating power equipment. Even years later, when it was “cured”, my brain would suddenly go “zero G” on me. In a car that was bad enough – I can’t imagine that being OK flying a plane.