Patient or employee:
(1) coughing and/or sneezing
Ventilation:
(1) positive pressure ventilation
(2) high-frequency oscillatory ventilation
Airway management:
(1) endotracheal intubation
(2) airway suction
(3) tracheostomy
(4) bronchoscopy
Other pulmonary procedures:
(1) chest physiotherapy
(2) nebulizer treatment
(3) sputum induction
Other sources:
(1) hot water supply or heating water
(2) pouring a large volume body fluids into a toilet
(3) any suction or vacuum use
(4) application of heat or something hot (kitchen, operating room, etc)
(5) water fountain
(6) excessive shaking of any fluid
(7) any cutting tool - saw, drill, homogenizer or blender
