Complaints consist of odors or actual health effects.
The investigation may consist of a building walkthrough, occupant interviews and possibly building testing to determine an evaluation of the problem. Other sources of IAQ problems are discussed below. These organisms include fungi, bacteria, viruses and protozoa which are all present in the indoor environment. These organisms are essential components of the ecosystem. However, when indoor levels exceed outdoor levels, building occupants may suffer from runny nose, eye irritation, cough, congestion, flu-like symptoms, and fatigue.