WATCH: A Video Showing Why Facemasks Don’t Contain Your Cough Very Well

German scientists did a test to find out the best way to stop the flow of air from a cough.  They used a method that allowed them to SEE the air as it dispersed from a man’s mouth.  First they had him breathe normally, and then do an open-air cough.

Then he coughed into his hand, into his sleeve, into a dust mask, and finally into a surgical mask.  None of the methods completely stopped the flow of air, but the one that worked best was when he coughed into his sleeve or elbow.

 

Abstand halten! – Wie sich Atemluft beim Husten verbreitet. Ein Experiment der Professur Bauphysik. from Bauhaus-Universität Weimar on Vimeo.

Image by mohamed Hassan from Pixabay