The article provides a comprehensive overview of electronic tongues and noses, highlighting their applications and advancements. Electronic tongues and noses are advanced devices that can detect and analyze chemical and biological compounds in liquids and gases, respectively. These devices are crucial in various industries, including food and beverage quality control, environmental monitoring, medical diagnosis, and automotive safety. The technology leverages advanced sensors, such as electrochemical, optical, and piezoelectric sensors, to provide precise and real-time measurements. The article discusses the principles behind these devices, including the use of sensor arrays and data acquisition systems. It also covers the data preprocessing and analysis techniques, such as dimensionality reduction and feature extraction, which are essential for enhancing the quality and interpretability of the data. Machine learning and AI-based algorithms are employed to perform classification and regression tasks, improving the accuracy and efficiency of the analysis. Key applications of electronic tongues and noses are detailed, including their use in healthcare for disease detection, food industry for quality control, product authenticity verification, environmental monitoring for substance detection, and criminalistics for locating missing persons. The article concludes by emphasizing the versatility and potential of these technologies, noting their growing importance in various sectors and the ongoing advancements in sensor technology and data processing tools.The article provides a comprehensive overview of electronic tongues and noses, highlighting their applications and advancements. Electronic tongues and noses are advanced devices that can detect and analyze chemical and biological compounds in liquids and gases, respectively. These devices are crucial in various industries, including food and beverage quality control, environmental monitoring, medical diagnosis, and automotive safety. The technology leverages advanced sensors, such as electrochemical, optical, and piezoelectric sensors, to provide precise and real-time measurements. The article discusses the principles behind these devices, including the use of sensor arrays and data acquisition systems. It also covers the data preprocessing and analysis techniques, such as dimensionality reduction and feature extraction, which are essential for enhancing the quality and interpretability of the data. Machine learning and AI-based algorithms are employed to perform classification and regression tasks, improving the accuracy and efficiency of the analysis. Key applications of electronic tongues and noses are detailed, including their use in healthcare for disease detection, food industry for quality control, product authenticity verification, environmental monitoring for substance detection, and criminalistics for locating missing persons. The article concludes by emphasizing the versatility and potential of these technologies, noting their growing importance in various sectors and the ongoing advancements in sensor technology and data processing tools.