A sensor is being developped using a highly sensitive new polypyrrole-based material which detects odorant levels of less than 1 ppm. In the development of the sensor, the data manipulation and interpretation are as important as the development itself to fulfill the electronic nose capabilities.
The sensor response has shown that distinctive patterns are identifiable and associated to different types of pig manure. These positives results could help linking odour to chemical compounds with the use of the electronic nose.

More research should be done on this type of technology to give and reliable and more easy way of evaluating odours. Quite a bit of work have to be done to reach that point.