OTTAWA. Jan. 24 (Xinhua) -- Five passengers were hospitalized after all 185 passengers felt bad on board a plane at a Quebec City airport in Canada Thursday morning, according to CTV.

The passengers experienced various symptoms including itchy eyes, dizziness, and vomiting during the plane's de-icing before takeoff.

Ambulances were called and all passengers on board Air Transat flight 782 to Fort Lauderdale, Florida. were seen by paramedics around 11 a.m. Thursday.

Firefighters evacuated the Air Transat plane on the tarmac at Jean Lesage International Airport. They conducted a reading of the plane's air quality immediately and found that it was healthy.

The airline has launched its own investigation into the incident, a spokesperson of the ariport said it's possible there was a ventilation problem in the plane.

Five of the passengers were transported to hospital. There are not an update on their condition.

The other passengers are waiting for another flight in the terminal and are expected to depart on another plane for Florida at approximately 5 p.m Thursday.