Thank you to those who have acknowleged the crew in this situation. I was an operating member of the cabin crew during the incident.
The thing I find most shocking is that this passenger actually boarded a second flight carrying the same dangerous goods. Surely he wouldve realised that maybe, just maybe it was his container of gas which poisoned at least 5 passengers and all of the cabin crew and he would think not to carry it again. Even if he didnt come forward and say 'opps' he certainly couldve disposed of it somewhere. He was lucky that the replacement service was operated by the 717 and the 100% fresh air ventilation prevented him from further harming his fellow passengers. Even if he wasnt concerned about that, he mustnt have taken into consideration that his actions may have caused a second diversion and further delays and inconveniences to the 153 passengers trying to get to CNS that night, including himself.
Obviously not a real bright spark.