Odour expert - Senior Consultant & Operations coordinator at Odournet SL. Odour expert - Senior Consultant & Operations coordinator at Odournet SL. Guerau Arisa is an management and treatment of environmental odors expert in different industrial sectors, especially in the field of waste treatment processes with high organic load. For this sector he has extensive experience in the management and improvement of methanogenic digestion and composting processes, as well as wastewater treatment. He has extensive experience in the realization and coordination of sampling campaigns, olfactometric analysis, sensory field evaluations, atmospheric dispersion simulation works and environmental impact studies based on a global and strategic vision. Guerau has a strong capacity for observation and organization, including attention to detail and multitasking skills as well as the ability to analyze and solve problems in a pragmatic way.