Ellona capitalizes on its expertise to develop customized and miniaturized multi sensors devices for environmental monitoring (air quality, nuisances at work or at home), for intelligent home and household appliances (fridges, cooking oven) as well as non-invasive health status monitoring via breath or skin. In addition, Ellona develops the associated gas or odour data banks that identify the sources of nuisances, food decay, or health status. Another main application is odour control in wastewater treatment plants worldwide.