[TheRedSoxWinThePennant]

valium gas what a cool idea valium is absorbed rapidly in the lungs of course if you inhale to much you may just go to sleep and forget to breathe

[LibWhacker]

if you inhale to much you may just go to sleep and forget to breathe

Yep. With every little breath, you're getting another little dose. Eventually, you overdose and die. I would think it would be critical to ventilate the place or get the hostages out of there ASAP after the bad guys have been neutralized.