Among the human activities that may generate problems related to unpleasant odour emissions, landfills represent
one of the major causes of odour complaints. In this study, the results of odour concentration measurements sampled
from the principal odour sources of seven different and dimensionally representative Italian Municipal Solid Waste
(MSW) landfills are presented. Experimental data are then used to estimate an Odour Emission Factor (OEF). The
average OEF is calculated to be 5.573.4 ouE s1m2. This value is consistent with the OEFs that can be calculated
based on existing literature data, such as surface flux rates relevant to the Landfill Gas (LFG) emissions through the
landfill surface.