Abstract: A device for gas detection and exhaustion includes a housing having a duct with an inlet and at least one outlet. A motor having a casing mounted on a housing includes a shaft extending into the duct and propeller means mounted to the shaft for exhausting a gas from the duct. A sealing means associated with the motor and the casing effectively seals the motor from the atmosphere. A gas detector operatively disposed in the housing detects undesirable gas, the detector is operatively connected to an actuating means for actuating the motor when the undesirable gas is detected.