Is it ok to drive without a Muffler? What does a Muffler do? And other thoughts on Mufflers!!! Have you ever been next to a Vehicle that doesn’t have a Muffler? The noise can be deafening. Some other reasons to get your Muffler fixed: Driving without a Muffler can be Toxic, the Exhaust Fumes may leak within your Vehicle. The Carbon Monoxide over time may cause dizziness, headaches and nausea. The Smell itself it terrible. I mentioned earlier about the noise, which most people find offensive. The Muffler if broken over a period of time can effect your Autos Engines’ performance. Last but not least, you are polluting the air we breathe. The word “Muffler” was used as early as 1530 it is a wrap or scarf for the lower part of the face. To cover or wrap or protect something. In the 1890’s referring specifically to an automobile, it was an Exhaust System Silencer!!! So, in common person slang, it is any device used to deaden sound. The “Muffler&rdquo ... read more