A control system for a vehicle includes an odor sensor disposed at a vehicle and operable to sense odors exterior of the vehicle. A controller is operable to control an external air intake actuator of the vehicle. The controller receives an input from the odor sensor and, responsive to the controller determining that a sensed odor is above a threshold odor level, the controller actuates the external air intake actuator to close the external air intake. The controller, responsive to actuation of a user input and a global positioning system of the vehicle, may save a geographical location as a bad odor zone and may actuate the external air intake actuator as the vehicle approaches the bad odor zone during subsequent drives of the vehicle along that road.