Recently I have started to notice a burning smell while driving my car. It could be while I am driving or stopped at a drive through. It doesn’t last the whole drive and it is not every time I drive. I haven’t noticed any leaks, car is not over heating and there is no engine light on. Sometimes it smells like burning rubber but sometimes it just smells like a burning smell. When I get a chance I get out to smell near the hood but don’t smell anything. Thoughts?