Is it bad if I'm still high off air duster?

So I know it's deadly, stupid, and will get me nowhere but to the graveyard..I know thee things and if you've never huffed air duster DONT DO IT!!!!!...Anyway, all day long I've been huffing and huffing on my airduster through a towel and the last time I huffed was about 4 hours ago, but I still have a high feeling. I'm somewhat dizzy. I feel similar effects to if you were just to finish smoking a bowl of marijuana. Is this bad or is it just still in my system or what? Im basically light headed. And since the can is empty and I have none left at all, I won't be doing it anymore :)