The pilot of the Russian Su-34 fighter-bomber seems to have taken a small smoke in the cockpit, but this is just a staged photo, and it should be a ground-level staging. Because the cabin of a modern fighter aircraft is not ordinary air at high altitude. Pilots breathe high concentration oxygen or even nearly pure oxygen through the oxygen supply system. Oxygen is a very strong oxidizer, and any spark in a pure oxygen environment will instantly turn into an uncontrollable fire, with absolutely catastrophic consequences.
The idea of smoking on a fighter jet is as dangerous as lighting fireworks in a munitions depot. For the absolute requirements of safety, operation, and discipline, this behavior is absolutely not allowed by any country's air force.
Original: www.toutiao.com/article/1842791182771209/
Statement: This article represents the views of the author himself.