Follow regulations concerning the timely and proper disposal of dead animals. In general, be a good neighbor. These are relatively few and direct. When you prevent or inhibit any of these steps, you reduce or remove the odor problem. Gases, some of which can be odorous, result from the natural biological decomposition of organic matter.
Decomposition occurs in one or two basic ways.
If oxygen is available, organisms will use it, and this process is aerobic decomposition. If there is no oxygen present, the process is anaerobic. Systems that operate aerobically are odor free. Anaerobic systems that are properly designed and managed can operate with an acceptable level in a normal rural setting. A number of factors influence biological activity.