Airsickness is usually a combination of spatial disorientation, nausea and vomiting. Severe airsickness may cause a person to become completely incapacitated. The defunct ATA Airlines used airsickness bags that had "Occupied" on them. His father, son of a railroad worker, was the inventor of the airsickness bag. Calhoun is the granddaughter of Gilmore Schjeldahl, the inventor of the plastic-lined airsickness bag. Airsickness is a sensation which is induced by air travel.