A hood system including a main body comprising an exhaust duct, a fan configured to generate airflow in the exhaust duct, an arm including an intake port and configured to allow air to be sucked into the intake port so as to pass through the arm and thereafter in the exhaust duct, a driving unit configured to be driven to move the arm, a sensor module configured to sense an environmental state of the hood system, and at least one processor configured to control driving of the driving unit based on the sensed environmental state to move the arm and thereby position the intake port based on the sensed environmental state.