I would never waste one of my Dilaudids that way personally, of course I didn't think they were worth a damn until I IV'd one. WOW..... is all I can say. I AM NOT ENCOURAGING ANYONE TO PICK UP THE NEEDLE WHO HASN'T ALREADY DONE SO. It's a slippery slope as many of us here at Bluelight can testify to.
Back to your question. There are many fillers & binding agents in pharmaceutical pills that would be very dangerous to inhale into your lungs. There is also a finite temperature for different opiates as at which point they begin to break down. I'm not sure of the specific temperature that hydromorphone begins to be destroyed, but I'm fairly certain that it's below that at which the pill will begin to combust. People do smoke heroine and opium, however for this to be effective, they are actually vaporizing it as opposed to burning it. This takes some considerable practice, and anyone who has ever tried to smoke anything, be it meth, heroine, etc. on foil has accidentally burned some up & wasted it in the learning process.
So, no I would not recommend trying to smoke a Dilaudid.
WP