Is there somewhere some, or otherwise how could an amateur like me make a dark/black powder for a person to sniff in a magic trick, which is not poisonous, unhealthy or makes you sneeze? The best outcome would be no effect on the person. I have no chemical expertise, so I would love to hear any recommendations by anyone or your opinions, on if this is even possible to do. I was thinking of some sort of milk powder or maybe something like this?
Thank you very much, looking forward to hearing your ideas!