A Delta Airlines flight headed from Las Vegas to Raleigh-Durham was forced to execute an emergency landing after numerous passengers fell ill and began vomiting.

The airline is calling the incident a case of “sympathetic vomiting,” which occurs when the sight, sound or smell of a person vomiting causes others to become nauseated and throw up


Sympathetic vomiting

According to radio traffic, a person began vomiting on the plane, followed by five cases of “sympathetic vomiting.”

Flight 841 touched down just after 6 a.m. Because the incident was over so quickly, emergency workers were returned to their regular duties. source