Credit: Hu, W., Wan, L., Jian, Y., Ren, C., Jin, K., Su, X., Bai, X., Haick, H., Yao, M., Wu, W., Adv. Mater. Technol. 2019, 4, 1800488. https://doi.org/10.1002/admt.201800488
E-noses combine arrays of chemical sensors with pattern recognition techniques to recognize odors.