Protective gear for pilots in a smoke situation would include:
1. face mask or goggles
2. pressure fed oxygen/mask...
a face mask would have oxygen fed from a cockpit source... and is the more modern version, though seperate goggles and mask are still in use some places.
there is also a smoke hood that might be used for evacuation, but not likely in this case. the hood has a quick inflating oxygen charge and a longer lasting charge...even small LED lights to warn when the oxygen is running out.
as to dumping fuel, the 757 doesn't have fuel dumping capability. (correct me if I'm wrong). Fuel dumping starts with bigger planes and the easy to remember cutoff would be the 767...some have dumping, the early ones don't.