Ever get a headache, cough, feel nauseous, or have a wave of exhaustion come over you for no apparent reason? It may not be allergies. And you may not be sick... not entirely. The problem could actually be your building. Sick Building Syndrome (SBS) is real and affects as many as 30 percent of all new and remodeled buildings, according to the World Health Organization. Sick buildings can be traced to faulty heating, ventilation and air-conditioning systems (HVAC) whereby any number of building materials, bacteria, toxic mold or volatile organic compounds aren’t properly ventilating, and.