Electronic noses, E-Noses, are instruments designed to reproduce the performance of animal noses or antennae but generally they cannot match the discriminating power of the biological original and have, therefore, been of limited utility. The manner in which odorant space is sampled is a critical factor in the performance of all noses but so far it has been described in detail only for the fly antenna.
Berna, A. Z., Anderson, A. R., & Trowell, S. C. (2009). Bio-benchmarking of electronic nose sensors. PLoS ONE, 4(7). https://doi.org/10.1371/journal.pone.0006406