Indoor air quality is becoming more important than ever before, especially as people spend the majority of their time inside homes or workplaces. A key factor that influences indoor air quality could be the cleanliness from the air ducts—the hidden network that circulates heated or cooled air throughout a building. https://hedgedoc.eclair.ec-lyon.fr/lKoQD-F-QHaZFnTjLbHcTg/