Lately i have been hearing some like popping noises, almost like a tire going flat or somthing. I havent noticed it happening at any specific times or anything, but then today sitting at the light on my way home, there was alot louder pop, then it smelled like radiator fluid or somthing really strong, so i pull over to check what it was and i didnt see anything leaking and all my tires were fine, does anyone have ANY idea what it is?