Visiting hotels, cafes, restaurants and supermarkets, classrooms and offices, we breathe, talk and laugh. As well, we cough and sneeze. With the new measures to prevent the coronavirus from spreading, our way of living changed completely. We made a habit of washing our hands frequently, keeping 1.5 metres distance of each other and disinfecting surfaces for example. Now, looking into the air we breathe, is a problem that the Director of the SONEPAR Connect agency in Reims was keen to solve.