The German academics who carried out the research believe masks create a pocket of dead space between the mouth and mask, which traps the toxic gas.
Exclusive: Face masks may raise risk of stillbirths testicular dysfunction and cognitive decline due to build-up of carbon dioxide, study warns
Exclusive: Face masks may raise risk of…
Exclusive: Face masks may raise risk of stillbirths testicular dysfunction and cognitive decline due to build-up of carbon dioxide, study warns
The German academics who carried out the research believe masks create a pocket of dead space between the mouth and mask, which traps the toxic gas.