All of the above are signs of poor indoor air quality which affect health and productivity!
Work Health and Safety Regulation 2011
Regulation 49-50: A person conducting a business or undertaking must ensure that no-one at the workplace is exposed to a substance or mixture in an airborne concentration that exceeds the exposure standard for the substance or mixture. This may require air monitoring to be carried out.
Coal Mining Safety and Health Act 1999
Division 2 Generally applicable safety and health obligations of persons
A coal mine worker or other person at a coal mine or a person who may affect the safety and health of others at a coal mine or as a result of coal mining operations has the following obligations
(c) to take any other reasonable and necessary course of action to ensure anyone is not exposed to an unacceptable level of risk
Which means clean healthy air has to be provided at the workplace!
In the case of industrial premises, it begins with a walk around inspection to gather information. We may survey the occupants and their locations, movements, tasks, potential industrial pollutants and heavy vehicle movement. We then carefully examine the inside of the building’s air conditioning and ventilation systems to discover what possible contaminants could be present, which could involve taking samples for laboratory testing and determining how people could be exposed in order to formulate corrective actions.