sulfur smell could be either a bad cat or higher sulfur content in the most recent batch of gas when you filled up. If the cat is clogged, you'd get noticeable bogging down when trying to accelerate...possible issues stalling out. If the cat is monitored by a down-stream O2 sensor, it might trigger a CEL.
2012 Black JKUR. 15" wheels/33"tires, Hurricane Flat fenders, Trailforce HD rear bumper, Spiderwebshades on top and on Rancho tube doors, RR aluminum hood catches, QT tonneau cover, Mopar hood lock, Bestop underseat lock box