02 sensor

What is your question?

My question is my car was jerking slightly forward while going 45 miles and hour and when having to stop the car at a signal light it then began to putt putt and want to cut off, I had to always be in the go mode or it would have cut off. It also has an offensive odor along with it that smells like rotten eggs. Any suggestions of what that might be. I've been told 02 sensor heater, got that completed, still happening, I've had the throttle cleaned, it helped for about a month and it's back, help someone, what could that be????