Man who left box in plane

This movie is about a man who was obsessed with his girlfriend and she must have put out a restraining order on him, one day while following her he saw her walking with another man and he bought a jewellery box or some kind of special box and put a green substance in it where when anyone inhales it , it kills them instantly and I think it had a stopwatch on it and when it goes to zero it lets out the substance, there’s a part in the movie when it almost finished where a retired pilot or something like that sacrifice his self by taking up the box so other persons wouldn’t be killed, there’s also a part where he was talking to his ex- girlfriend on the phone and she said,” I don’t hate you, I’m afraid of you” In the end he jumped off a building

Got something to say?