Moreover the cleaners have to spend a disproportionate amount of time on such a room and this further limits the amount of time that can be spent on cleaning the rest of the building. Furthermore the chance of fire breaking out, or of someone tripping up is greater in a messy room than in a tidy one. It is therefore important that you keep your own affairs in order yourself. The result is a room which is safer and cleaner. In some rooms, a ventilation system continuously replaces the air.
Air is brought in via a ventilator grille.
It is important that every duct remains clear to prevent the system becoming clogged with dirt or breaking down. In other words, no plants or piles of paper should be put on the ventilation grilles. If the university required you to work at home, then the 'Arbo' law must also be adhered to. In many cases this will entail working with computer screens. This means that the computer work- station at home must satisfy legal requirements.