I responded on your other post, but want to reply here too:
Let me start off by saying I've never huffed, but it sounds like you experienced a hallucination. Among other more dangerous effects, hallucination is not rare when inhaling.
Are there any abusers out there who can share their experience or thoughts on this?
Right before I came to your post I read this one by another member of this message board who lost her sister to computer duster:
Please read and note your overall health and wellness is more important than a short high. Glad to hear you will never use duster again. If you haven't done so already, you should get help for this problem.