Delta bans certain type of mask

US airline Delta has upgraded its policy on face coverings to ban a particular type of mask. The carrier requires passengers to wear face coverings at all times: at check-in, in Delta Sky Clubs, at the gate, on the jet bridge and on the aircraft, barring during meal service. However, it has updated its guidance to prohibit masks with a valve. “Any mask with an exhaust valve is not approved as an acceptable face mask for customers traveling on any Delta operated flight,” says the policy. This is because masks with a valve are designed to protect the wearer, not other people, as they filter what is being breathed in rather than out. They’re most commonly used in construction work or during wildfire season. Many people bought such masks during the pandemic as they confused them with the N95 medical mask, known to be extremely effective. However, the non-medical variant has an exhaust valve on the front.<br/>