Keeping an air clean is a key to good health as air can carry pathogens, causing infection. An air purifier removes the allergens present in the air like animal excreta, mud mites, micro organism, pollen and host of different allergens. An air purifier can even take away the smoke particles within the air caused by smoking and cooking which makes your environment pollution free, leading to respiration clean and recent air. There are a lot of purifiers available in the manufactured by varied branded firms in varied sizes, shapes and features.