Smelling exhaust inside the cabin is a carbon monoxide warning — treat it seriously. CO itself is odorless, but if exhaust smell is getting in, CO is riding along with it.
Drive with windows open and get it inspected immediately — this is one of the few noises-and-smells that's a genuine health hazard rather than just a mechanical cost.
Related services in Florida typically run $100–$2,500 depending on what the diagnosis finds:
| Muffler replacement | $150–$500 |
| Exhaust leak / weld repair | $100–$300 |
| Full exhaust system replacement | $700–$1,800 |
| Catalytic converter replacement | $900–$2,500 |
See the full muffler repair cost guide →
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Genuinely dangerous — carbon monoxide causes drowsiness and impairment before you notice. Don't sit in the car idling with the smell present.
With no forward airflow, fumes pool and rise into the cabin — moving air masks the same leak.
The full exhaust path for leaks, plus cabin seals — smoke testing finds leaks fast.
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