The air purifier is a device used for removing contaminants that exist in the air of a room. They are a necessary item for people with allergies, for asthmatics and for people who smoke or have smokers in their household. Air purifiers are stand-alone units of various sizes. They 're useful for medical units as well as in industry to remove the impurities before processing. The air purifiers have different processes that vary in effectiveness – thermodynamic sterilization, ultraviolet germicidal irradiation, polarized-media electronic air cleaners, filter, activated carbon, photocatalytic oxidation, ionizer purifiers, ozone generators and titanium dioxide. People who have air purifiers in their homes or work places benefit from their effectiveness. Next we 'll be putting together a list of five ways in which the air purifier improves the lives of the users. 1.Healthier lungs Air purifiers eliminate threats to the human lung, air pollutants such as viruses and bacteria. For the smokers especially an extra protection can 't hurt; they are already damaging their lungs, no point in going any further. Children and old people are very sensitive and susceptible to diseases that are caused by the bacteria and viruses that they inhale every day; prevent the sickness from entering your home with an air purifier, which will offer extra protection to your more fragile loved ones. 2.No more bad smells Whatever lifestyle you have you can benefit from this device. A smoker or a