1) Rooms 
Air shower can refer to the following terms: ...[room] Air showers are specialised antechambers which personnel need to pass through before entering cleanrooms in order to decontaminate. Decontamination is done by clearing off dust and dirt particles from bodies of cleanroom personnel to minimize contamination of equipment or products. Designs to an air shower unit include single-side sh...
a shower of secondary cosmic radiation, caused by the interaction of cosmic radiation or gamma radiation with the atmosphere.