I'm taking apart a Kodak 4200 projector. The lamp assembly includes a piece of "heat absorbing glass". The manual says not to touch it unless wearing gloves, to keep it covered when out of the projector, and that it may shatter. Being clueless, this sounds spooky. Is it dangerous, or will I just wreck it for projection if I get fingerprints on it? Most glass shatters, but is this going to spontaneously burst into shards? It's not going back into the projector. Is it useful for anything, or should I wrap it in foil and toss it in the garbage?