Indoor air pollutants can cause homeowners to suffer from flu-like symptoms such as headaches, nausea and respiratory irritation. They can also exacerbate existing illnesses such as allergies and asthma. Recent statistics show that over the past ten years, asthma case have increased by 51.6% and that over 40 million people suffer from asthma and allergies today. By removing airborne dust particles from the air, you reduce the amount of exposure they have on your respiratory system.