Sodium hexafluoride is six times heavier than air, which means if you inhale it, it has the opposite effect of helium! Which allows Neil Patrick Harris to do a spot-in imitation of Buffalo Bill from The Silence of the Lambs.
Sodium hexafluoride is six times heavier than air, which means if you inhale it, it has the opposite effect of helium! Which allows Neil Patrick Harris to do a spot-in imitation of Buffalo Bill from The Silence of the Lambs.