helium incident

We were eating at a Mexican restaurant this past weekend when Zach and his cousin were seeing how they could alter their voices by inhaling helium from the balloons in the restaurant. We all laughed as Zach, after inhaling the entire balloon, squeaked out funny phrases with his helium voice. Within a few moments, I called across the table to Zach to get his attention, and he did not hear me. I called his name again, a little louder this time, but he continued to stare with his head down and a freakish grin on his face. This time I yelled and he did not respond. I realized something was wrong so I got up and walked over to him and realized that he was not in control of himself, almost like he was having a seizure. It was really scary. Brian picked him up and we took him outside. He took some deep breaths as tears came down his face. He was a little dizzy, but he was fine. We could laugh later--and thank God. Lesson: don't inhale too much helium, especially if you have asthma :)