A Dublin-based surgeon has illustrated why it is important not to become complacent of social distancing in a video released today.
It is because we live in a cloud - especially if we sneeze or cough. The professor has come up with a way to illustrate the effects of a sneeze or a cough and how it can impact on others' personal space.
The project involved Ronan Cahill, Professor of Surgery at Mater Misericordiae University Hospital and University College Dublin, and Dr Kevin Nolan, who is an engineer at University College Dublin and an expert in Schlieren technology.
Using Schlieren technology - a physics principle using light to show the density of fluids and gases - the two illustrated how air moves around people when they breathe, cough