Need advise on whether to buy an Air Purifier or not? My son is almost 6 months and my parents are not advising to buy an air purifier as per them the weather in the house and outside should acclimatize, as we take our son putside morning and evening, so buying an air purifier might have bad impact on his health as the air inside house is clean but when we take him outside he will be breathing bad air, need advise on how will his health be impacted. its delhi winters i am taking into consideration here.