You have a leak somewhere obviously. You will have to do some detective work to locate the source. Start with checking under the hood and let your nose be the guide. The fresh air inlet for the cabin area would be under the cowl so all it would take is fumes from a very small fuel leak under the hood to find its way into the cabin area.
The 2010 Dodge Charger has 24 valves.
The 2010 Dodge Charger has a V6 engine.
The 2010 Dodge Charger has a 4-speed automatic.
The 2010 Dodge Charger is a gas-powered vehicle.
The 2010 Dodge Charger is 16 ft. 8.1 in. (200.1 in.) long.
The 2010 Dodge Charger's turning circle is 38.9 ft..
The 2010 Dodge Charger has double overhead cam (DOHC).
The 2010 Dodge Charger has a drag coefficient of 0.33 Cd.
The curb weight of the 2010 Dodge Charger is 3728 lbs..
The 2010 Dodge Charger runs on regular unleaded.
The height of the 2010 Dodge Charger is 4 ft. 10.2 in. (58.2 in.).
The 2010 Dodge Charger has 40.2 in. of rear leg room.