What is dust? Dust is made up of tiny solid particles floating in the air around us. The particles can be made up of anything from asbestos and soil to plant and animal matter.
A house with pets is almost certain to have animal dander and pet hair. Animal, plant, or mineral all dust is treated by the lungs. The lungs are forced to deal with the intrusion and do so in different ways depending on the particular material present.
The respiratory system typically deals with irritations like dust via mucous. The offending material is caught in mucous secreted for just this purpose and then pushed upwards to where it can be coughed up or spit out.
In environments where the home has high levels of dust a person may experience rhinitis, tracheitis, or bronchitis depending on where the dust is collected or a combination of the illnesses.
These are all aggravated by exposure and susceptibility to the chemicals involved. Pneumonias and other more serious illnesses are possible as well, but not likely in the typical case with typical dust. Should a person experience allergy like symptoms for long periods of time it might be a good idea to have the area tested for dust and think about getting a purifier for the house.
Another procedure would be to call for someone to inspect your home HVAC Duct system as well to make sure that your ventilation system is clean and not continuing the spread or harmful toxins or allergens that are causing health problems.