Jones, T., Craig, A., Hoy, D., et al. (2000). Mass Psychogenic Illness Attributed to Toxic Exposure at a High School. The New England Journal of Medicine. 342: 96-100.
The authors review a case from 1998, where a teacher noticed a smell resembling gasoline, the school was evacuated, 38 people were hospitalized at first, and another 71 reported to the emergency room (after the school reopened). No medical or environmental explanation was found, and the authors describe the symptoms, investigation, and outcome of the event.