Buildings impact human health. The design and operation of an indoor environment influences occupants’ well-being. Aerosol transmission has been defined as “person to person transmission of pathogens through the air by means of inhalation of infectious particles”. The source may be an infected person such as a flu sufferer sneezing. Aerosol generation can also happen via coughing, laughing or just exhaling. This paper focuses on investigating the spread of aerosols after sneezing in a ventilated office space and the length of time they reside in the breathing zone thus estimating the possibility of infection of another occupant.