The MIA, as an international airport, strives to enhance its service quality. In order to provide a healthy environment for passengers, two new smoking lounges opened in the south and north ends of the airside departure hall. The air-purification system adopting advanced technology introduced from Japan. This machine separated smoking areas from non-smoking areas by employing "Air Curtains". This technology ensures that negative air pressure was maintained within the smoking area and eliminated smoke drifting outside the controlled area. The new smoking lounge can cater for 40 persons at the same time and there are advertisement boxes for commercial usage.