My son has cold and cough for three weeks now. We’ve tried different over the counter medicine but still his condition didn’t improve. Yesterday we’ve decided to bring him to his pediatrician for check up. According to the doctor his cold and cough could be due to allergies from dust. He advised us to continue his medication but we should also have an air purifier at home. This morning I surf on the internet to look for a good air purifier and I’m happy to found one. The IQAir is the best choice for me. With its hyper-Hepa filter it can easily remove pet dander, viruses, pollen, dust mites, mold spores, or bacteria. It has the highest grade of carbon filter for odor and gas removal, has a light indicator that signals when it's time to change the filter, and a six fan speed settings. This air purifier is perfect for persons with asthma and other allergies.