sick building syndrome

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun An illness affecting workers in office buildings, characterized by skin irritations, headache, and respiratory problems, and thought to be caused by indoor pollutants, microorganisms, or inadequate ventilation.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun the adverse environmental conditions in a building that pose a health risk to its occupants
• noun the symptoms experienced by people who work there