The Control Disease Center (CDC) recommend wearing a medical face mask for anybody that has already a sickness such as the flu or any other precondition. You can read more about the chinese covid-19 in our Guide.
The ncov is shutting down the all world with massive quarantine orders for fear to spread further the disease. Over 250,000 people worldwide have been infected already. But to avoid this number that is going to increase exponentially we could all imitate Hong kong and wear travel pillow eye mask.
So go Buy your face mask cold flu RIGHT NOW to prevent the chinese covid-19 from affecting you and/or to prevent-you from infecting other people around you.