Hawaiian Airlines flight HA-23 made an emergency landing in Kahului, Hawaii, on August 31st.
The Boeing 767-300 plane was flying from Oakland, California, when the several passengers complained of breathing problems due to an unusual odor on board.
The plane continued for a safe landing.
Twelve passengers and three crew members were checked by medical teams at the airport.
It is believed that the odor was caused by a pepper spray.