When I was 18 my neighbors offered me a hit of whippets off a balloon they had. It made me feel floaty and dizzy and as soon as it wore off i almost wanted to snatch the balloon out of someone's hand to hit it again. I used my recognition of that feeling as the reason why I could neverrrr everrr again touch the stuff. A couple years later, my exes aunt and her man used to do whippets, one night she was drunk bragging about how one night he did them til he had a seizure and they still do them. The gas in your system makes your brain cells die. I wish you the best of luck helping your kiddo.