In message , Clive
George writes
Thing with hydrogen sulphide is that although it's toxic, it's far stinkier,
so you run away because of the smell before it's too bad.
Thing with hydrogen sulphide is that it kills nerves, so a high enough
concentration of it and you can't smell it (or anything else).

I knocked myself out once with home-made chloroform (carbon tetrachloride
solvent + bleach I think).

Carbon tet + bleach sounds unlikely. (googles). Acetone + bleach sounds
rather more likely.



--
Clint Sharp