An air rubber is a portable device that purifies the air. The device operates by sucking in air from one side and passing it through filters and then emitting the clean from the other side. During this process, the filters inside the unit capture tiny airborne particles, such as dust, pollen, and dander. With the help of these units, you can clean your indoor air to prevent a lot of respiratory diseases. If you already have one, we suggest that you follow the tips given below for the best results.