How people evaluate odours does not depend entirely on the odorant itself. Context influences perception. A research team from the Leibniz Research Centre for Working Environment and Human Factors (IfADo) has worked with researchers from the Thuenen Institute of Wood Research in Hamburg to investigate that wood odours are rated as significantly more pleasant when accompanied by a corresponding image of wood. The results of two recently published studies suggest that the health benefits of current regulated odour assessments of building products are questionable.