Re: No one uses halon anymore.
"No one is going to die "
ALL of the modern systems work by reducing the oxygen content of the room below 12-14% (vs 19-20% in normal atmospheric conditions). Think of it as an instant trip to 15-18,000 feet without the pressure reduction.
At that point most people are going to be unconscious and anyone overweight/unfit or hypertensive runs a high risk of dying - the risk of pulmonary/cerebral edemas doesn't go away immediately after exposure either.