Dude, don't smoke out of that shit. Inhaling heated glue will fuck you up in a most unpleasant way.

Last time I picked up I stopped and chatted with my dealer for awhile, and most of the time he was railing on about how using glue to fix a bong is one of the worst things you can do. He also told me a story about a friend of his who fixed her bowl with superglue, then after smoking out of it wondered why she was going into convulsions...

Best advice is to get a new piece mate. You don't want any of that toxic shit in your lungs.