UNITED STATES (AP) — American Airlines says seven flight attendants were treated at a Florida hospital after complaining that a strange odour on their plane gave them headaches.

An airline spokeswoman said Tuesday that the employees were treated and released. Alexis Aran Coello said none of the passengers on the flight from Charlotte, North Carolina, to Orlando, Florida, complained of symptoms.

In a separate incident, a Southwest Airlines plane flying on Monday night from San Antonio, Texas, to Orlando made an emergency landing in Jacksonville, Florida, after oxygen masks in the cabin dropped from the ceiling. A Southwest spokesman told media in Florida that the flight was diverted because of an issue with cabin pressure but that the plane with 133 passengers made a safe landing.

American Airlines said an Airbus A330 with 89 passengers and a crew of 10 landed safely just before midnight Monday in Orlando. According to the airline, medical personnel checked the crew members at the airport and cleared them, but the employees asked to be taken to the hospital early Tuesday morning.

A message left with the flight attendants’ union was not immediately returned. American said the plane was being checked by maintenance workers.