Dealing with breathing problems is a major health issue in large urban areas,especially for the elderly. Respiratory vulnerable are allergies caused by pollen,mold or dust that vulnerable in the air. Moving to less humid climates where fewer grow is a good solution for old people. The elderly are more circulates to respiratory problems, so they get infections more frequently than most other people. Healthcare workers and nurse who deal with the elderly try to reduce indoor air pollution to help people better.