Abstract
Many jurisdictions compare model predicted odour concentration statistics against regulatory exposure limits or criteria in order to assess the risk of proposed developments resulting in nuisance odour impacts. However dose–response studies designed to calibrate such criteria have returned widely divergent findings, particularly regarding the degree of influence that the frequency and intensity of odour impact events have on adverse community response (annoyance). In the absence of clear guidance from empirical data, jurisdictions have adopted a wide range of odour impact criteria and harmonisation has proven difficult to progress. This lack of harmonisation constitutes a significant gap in best-practice standards for odour impact assessment methodology and creates a substantial risk of poor assessment outcomes.