A Delta flight from Detroit ended with the cabin filling up with smoke while the plane was on the tarmac. 

It may be time to actually start paying attention to the in-flight safety demonstrations, because on Tuesday night, passengers on Delta flight 1854 exited their plane via inflatable slide at Denver International Airport.

According to the Independent, a Delta representative has stated that there was no fire, and the smoke that filled the plane was because of 'hydraulic fluid hitting the auxiliary power unit,' which can happen in cars as well.

Most importantly, no one was seriously injured, but some passengers described it to the media as a 'flight from hell' to Denver, where they were greeted by a large satanic horse statue. So, in a way, it may have also seemed like a flight to hell.