The horrific moment Ryanair passengers witness smoke filling the cabin as it had departed from Otopeni Airport, Romania, on Tuesday (January 21).

"The plane smelled of petrol during this time and 15 minutes after take-off smoke started filling the entire plane. people were screaming everywhere, they were terrified," the filmer said. "A woman next to me had a panic attack. It was very chaotic."

Ryanair later confirmed that the smoke was caused by the de-icing fluid passing through the plane’s air conditioning unit.

I was taking a flight on Ryanair from Bucharest airport to Stansted airport in London, my flight was supposed to leave at about 6:30am. However there was a long delay, at about 8 I had to switch planes as there was a problem with the first plane, i then had to wait another 2 hours and a half till before it took off. The plane smelt of petrol during this time and 15 minutes after take off smoke started filling the entire plane. people were screaming everywhere. They were terrified. A woman next to me had a panic attack. It was very chaotic. The air masks hadn’t even dropped and honestly I though I was going to die. That video Is actually me saying bye to everyone. This whole time there is almost no speaking and through the whole delay of 4 hours we didn’t get any information. Anyway we had to emergency land after that back at the airport. I remember seeing ambulances and fire trucks next to the plane as I was getting off. I then had to wait another 3 hours for a plane to come from Stansted