"Do not bet your life, or mine, on this assumption. Pressure changes, temperature changes, and rates of absorption can and are used for mixing reactive agents."
My way of dealing with this and other possible ways of attacks on planes, is to not fly. Used to when I was young; am avoiding it like the bubonic plague now that I am older and circumstances have changed. I'd rather take a hot air balloon before attempting the total hassle of airplane flight nowadays.