Scientists from the University of Rovira and Virgili (URV) in Spain have presented a unique 3D model of the human nose and upper respiratory tract that simulates coughing and sneezing. This innovative development allows for a better understanding of the mechanisms of infection transmission.

Using high-speed cameras and a laser beam, the researchers analyzed how air particles disperse under different conditions.

The results showed that exhaling through the nose causes particles to disperse more vertically, which can reduce the risk of disease transmission in close proximity but increases the time they remain in the air. In contrast, exhalation through the mouth promotes more horizontal dispersion, which increases the likelihood of them reaching others.

The authors of the project emphasize that further research is needed to assess the influence of environmental factors on particle dispersion. In the future, the results can be used to optimize ventilation systems in public places such as restaurants and hospitals