A salt rock lamp in a room creates the same negative ions improving the air quality of the room such as the hilltop or a waterfall causing soothing effect on human body. These negative ions neutralize not only the polluted air of a modern city but also the bombardment of ‘electronic smog’ caused by the TV or monitor working in the room. These ions remove the moisture from the room and the other things such as bacteria, virii, mold spores, and respiratory allergens and irritants cannot remain airborne. In short a room atmosphere free of dust, electronic smog, or any other kind of pollution in these days when the cities are heavily polluted by the exhaust of fumes from cars, trucks, and buses; factory smoke, cigarette smoke, dust and soot, and electro-magnetic pollution seems to be a safe heaven for a human being. This atmosphere not only protects a man from diseases and strengthen the lungs bust also causes the peace of mind.