Metal oxide sensor is widely used in many research fields. including E-nose for gas detection due to their tunable sensitivity. space efficiency and low cost. One of the most popular open data sets in electronic nose research contains data on various gases sampled using a MOx sensor in a wind tunnel over 16 months. https://www.spidertattooz.com/Gruvi-Golden-Lager-Non-Alcoholic-6PKC-12-OZ/