Video monitoring device (1) comprising a computing unit (4), a camera (2), a communication interface (42), and a volatile organic compounds sensor (37) configured to measure at least a concentration of organic compounds in a room of interest, said computing unit being configured to record the concentrations of organic compounds reported by the volatile organic compounds sensor, and configured to send images taken by the camera and volatile organic compounds concentrations to a remote entity, such as a smartphone (22) over a wireless link.