I was bored so me and my friend made a hydrogen generator for fun and because we are both into chemistry. We mixed water with some table salt and added aluminum foil as the anode and cathode because my friend has seen it done before. We plugged it in to a 12v 850mah adapter and it ran for 5-8 seconds in the ventilated garage until I unplugged it, walked inside and dumped it down the drain. I remembered that table salt had chlorine attached to it so I didn't want chlorine gas to be produced. Did it produce chlorine gas? This was not on purpose but accidental. Did that 5-8 seconds do much damage? We both feel fine and had no shortness of breath or anything and we were a couple of feet away from it when it started running. Will we both be ok? I mean it can't be as bad as when I helped get kids away from a burning car and me inhaling all the burning rubber and plastic.