Face masks are unlikely to cause over-exposure to carbon dioxide, even in patients with lung disease, according to a new study which contradicts statements linking mask-wearing to poisoning by the exhaled gas. As several govts across the world have made it mandatory to wear face masks, the researchers noted that some people were discouraging its use claiming health risk.

Face masks are unlikely to cause over-exposure to carbon dioxide, even in patients with lung disease, according to a new study which contradicts statements linking mask-wearing to poisoning by the exhaled gas. As several govts across the world have made it mandatory to wear face masks, the researchers noted that some people were discouraging its use claiming health risk.