What could be causing the strong dust smell in my house and how can I get rid of it?

The strong dust smell in your house could be caused by accumulated dust, mold, or mildew. To get rid of it, you can start by cleaning and dusting your home regularly, using air purifiers, opening Windows for ventilation, and using dehumidifiers to reduce moisture levels. If the smell persists, it may be helpful to consult a professional for further investigation.