Also, check out our Asthma Instructional Module from our Training Manual. Also, the person with underlying lung disease likely will be more sensitive to dust, gases, and fumes of all types.
Lower humidity leads to skin drying, irritation.
Ventilation Poor ventilation allows carbon dioxide to accumulate as well as other gases. This can be a problem in modern, airtight buildings. Odors Odors, such as those of swine confinement buildings, may seep into the home from the outside. The mechanism by which this occurs is a point of much debate. Long-term effects include lung cancer from inhalation of carcinogens within the smoke.