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We all think that the air outside is much polluted containing so many harmful impurities and on the other hand we are very safe inside our houses. Well friends it's a myth that the indoor air is very safe and healthy for us. Mostly the IAQ (indoor air quality) is taken for granted and not taken care of. As said by Mike Tringale, the Vice President of External Affairs at the Asthma and Allergy Foundation of America, "A growing body of scientific evidence shows that the air inside our homes can contain more allergens and pollutants than the air outside. The month of May is celebrated as asthma and allergy day for the obvious reason of extreme weather.

Let's get some details of the indoor air. The indoor air can be divided into four main parts- particles, smoke, chemical, biological. All four parts are some or the other way responsible for allergies but particles and biological part come out to be the main reasons for various allergies.

The most common allergens in the particle type are pollen, dust and dander. These are very small particles that can't be seen by our naked eyes. They may be invisible and appear just an inconvenience for most of us but dangerous for those who have allergy from particles. It gives way to allergies, asthma and some serious health problems and affects our respiratory system adversely. It can be only prevented by keeping your house dust free by cleaning and vacuuming on a regular basis.

Other important reason for allergies is biological group of the indoor air quality. The biological group consists of mold and fungi spores, germs, and bacteria. The mold and bacteria may cause various allergies and at the same time some respiratory problems. The molds are very common allergen in humid and damp areas. For example-a student of junior school was doing great in academics and was a scholarship holder. Suddenly after few days his asthma problem increased and his performance started deteriorating. No one could understand the reason but once he changed the school he was back to normal. His parents asked principal to make a check of the class room. While doing that it was found that there was mold in the crevices in the benches which caused the entire problem. To remove it, good air purifiers especially those with UV effect should be used in the houses. The UV rays destroy the DNA and kill the mold.

The smoke from chimneys or from cigarette consists of many harmful chemicals. These chemicals act as allergens and are very harmful if inhaled specifically for those who are allergic to it. Allergies from a particular chemical may be very injurious to health. Therefore inhalation of smoke in any form should be avoided because sometimes we ourselves don't know what chemical are we allergic to till we face the consequences. To remove it we should use air purifiers with heap and activated carbon filters.

As a conclusion we know that to avoid all kinds of allergies proper air purifiers and filters should be placed in our houses as prevention is better than cure.