Swegon: can inaudible noise be harmful?

Imagine you enter a building and, almost immediately, feel an indescribable discomfort. You listen and hear no noise, you breathe and find the air quality good. When you leave the building the previously felt discomfort disappears. Can the building have caused this distress? Unfortunately, yes. Recently published research has identified a possible source of the problem – it can be infrasound, inaudible noise.
The World health organization (WHO) has reported that humans have recognized certain medical symptoms after spending time in specific buildings.