Landfill emanations are the smells that come from landfills, which are areas of land where waste is disposed of. ODORS are one of the most common landfill emanations, and can be caused by a variety of sources, such as decomposing organic matter, chemical reactions, and gases released from the landfill. These ODORS can be unpleasant and can travel long distances, making them a nuisance to nearby communities.