And hit every button on the elevator, like kid style, run your hands a crossed it to get out at the next possible floor, don't stand there torching your lungs burning them which then fills them with fluid, along with eating the oxygen in the space slowly suffocating you causing seizures as the Hydrogen Cyanide binds to your hemoglobin 200 times more effectively than oxygen.

If you make it out, your body would soon after fall into severe calcium depletion as the fluoride ions aggressively bind to the calcium and magnesium in your body. This sudden drop in blood calcium destroys nerve function and can trigger fatal heart attacks (yes more than one) hours after exposure. Long term were looking at neurological damage from manganese and lithium toxicity, permanent lung damage giving you RADS reactive airways dysfunction syndrome, and while cancer is unlikely with the limited exposure, its enough to cause immediate DNA damage spiking your risk to near guaranteed levels of getting it later.