One of the main causes of allergies in your home furniture is dust mites. Dust mites are tiny creatures that live in dust and are too small to see with the naked eye. They thrive in warm, humid environments and feed on dead skin cells. This can make them a problem in homes where there is a lot of dust, such as those with carpeting or heavy draperies. Other common causes of allergies in the home include pet dander, mold, and pollen.