Intensive livestock production can result in odour problems for the neighbouring population. Areas of intensive livestock production will expand, develop and exist where feed is grown, water is available and transportation costs are reasonable. Odour nuisance can be assessed by considering the frequency, intensity, duration and offensiveness of the manure odours (FIDO). The integrated FIDO effect relates to the incidence of annoyance and nuisance. Since the nose is the sensor used to evaluate odour annoyance, odour nuisance can be very subjective. Odour responses differ in everyday life and in an odour measurement lab. In the real world the whole body is exposed (sight, hearing, smell) whereas in the lab only the nose is involved. Social interactions also affect the odour response.
Odour and Air Quality – Univ Alberta
Scentroid Odour Measurement