>>5685471>>5685550161 = 192-31 seconds remaining...
The cloud of choking gas is sweeping rapidly behind you now, drowning the carcass of the unfortunate horse, which is no longer visible in the murk. You are not sure if it is pure chlorine - perhaps urine might help against a low, dispersed concentration (QM: in fact, just water, anything soluble for chlorine would do!) but there could be other, more lethal gases mixed in; the best you can do is flee and hope to scavenge and recover some breathing apparatus, somewhere... Your lungs heave and shudder with the exertion of running as you try desperately to hold your breath, and not to inhale the hideous choking vapours...