OK, it is obvious that most people do not like or understand chemistry. But in a movie where science involved that should have been captured by a consultant! Here it goes:

In the very beginning of the movie in a scene in the airplane the bad guys obviously release (I assume) laughing gas from a cylinder into the oxygen masks. So all the passengers who use masks (and the real pilots) fell asleep. (One of the pilots wakes up later and tries to prevent a crash, so they are not dead.) But then before jumping off of the plane the main "bad dude" tells his side-kick to disconnect of "NO2" tank and dump it. Guys, the laughing gas is N2O! NO2 is pretty poisonous and obnoxious - passengers would have noticed NO2 in a second! I had to look at it again with caption - it says NO2 as well!

As a chemist I believe it is a pretty big one!