There are also HEPA air cleansers that can be purchased and placed in the room of a person with asthma. Remove things that will collect dust in the bedroom of a person with asthma. Remove nick-knacks and keep the walls and floors as clean as possible. Wet items, including towels and clothing, should not be left in the bedroom of a person with asthma, nor should plants or flowers. When mold is inhaled, it can cause asthma attacks.
Mold grows outdoors and indoors, especially in humid areas like bathroom showers and basements.
Eliminating mold throughout the home can help control asthma attacks. A gauge called a hygrometer can be used to monitor humidity levels. If a humidifier must be used, it should be cleaned weekly with diluted bleach, and the water should be changed daily so that mold does not grow. In the kitchen, use an exhaust fan to remove water vapor when cooking. Each week, empty water pans which are found below self-defrosting refrigerators.