Originally Posted by
Asturias56
"One bright spot is the Chinese habit of wearing a mask when ill to prevent the unchecked cloud of virus in every exhalation. That particular habit is something that the government would be wise to promote on TV etc"
no evidence it helps at all - far better to wash your hands regularly
While not airtight for inhaling and exhaling, the mask does physically stop the movement of larger droplets when sneezing or coughing so yeah it does help to an extent.