An air conditioning system controls all of the following EXCEPT:

An air conditioning system is primarily designed to control indoor climate conditions, which includes humidity, temperature, and airflow. It works by circulating air over a cooling coil, effectively lowering the temperature and removing moisture from the air, thereby controlling humidity. Additionally, it maintains air flow by using fans to circulate conditioned air throughout the space.

However, while air conditioning systems can help mitigate unpleasant odors by filtering and recirculating air, they do not actively control or eliminate odors. Odor control typically requires additional measures, such as air purifiers or other filtration systems specifically designed to address airborne particles and smells. Therefore, controlling odor falls outside the primary functions of a traditional air conditioning system, making it the exception in this context.