Open windows whenever possible, especially when cooking or cleaning.
Use covers on cooking pans; when frying, use a screen guard.
Use steam- or oily-vapor-producing appliances under the hood of the stove with the ventilating fan turned on. (Use the fan to control cooking odors and smoke as well.)
Clean high, flat surfaces several times a year.
Turn on the bathroom exhaust fan to keep steam from collecting dirt and diffusing it throughout the house.
Change furnace filters monthly during winter months.
Maintain your vacuum cleaner so that dust is not being blown back into the air as you vacuum.
Prevent dust and dirt from entering the house with doormats and weather stripping.
Dust regularly.
Don't smoke.