Abstract: An oil extraction booth, comprising: first and second pre-fabricated modules securable to each other to create a first air-tight interior work space; an inlet blower; an exhaust blower; a sensor sensitive to the presence of a gas within the work space; and a controller electrically coupled to control the speed of the inlet blower and the exhaust blower and electrically coupled to receive a signal from the sensor indicative of an amount of the gas in the work space. The controller is configured to operate the inlet blower and the outlet blower at a first speed when the amount of the gas detected by the sensor is less than a first predetermined value and operate the inlet blower and the outlet blower at a second, higher speed when the amount of the gas equals or exceeds the first predetermined value.