Iron Bird store has a new item available: steampunk gas mask. This stylish gas mask has been manufactured from polished copper and brass and two leather straps will securely hold it in front of your mouth. The mask covers both mouth and nose, but leaves eyes uncovered.
Permissions are set to allow copying and modifying, in case you wish to make your own adjustments into it.
Gas mask is available at SLEX: http://www.slexchange.com/modules.php?name=Marketplace&file=item&ItemID=327823
The Iron Bird store is located at: http://slurl.com/secondlife/Blorkus/252/176/111 if you would prefer to purchase the mask in-world.