[Sgt_Schultze]

the novel water splitter could be used to make chlorine gas

So a terrorist could quietly slip into the air handling facilities in any high rise and drop off a device which plugs into a standard outlet, turn it on and walk slowly away as inhabitants of the complex are poisoned.

[Red Badger]

They could do that now with a bottle of Clorox and Parsons Ammonia, two balloons and timer....................