THIS! If you have to wear an KN95 mask. Or better yet an N95 respirator like the 3M Aura.
RT @klillington: If you are planning to travel anywhere via any airport worldwide just be aware queues are huge, people are packed together slowly winding thru security and pretty much no one is wearing masks. Oh and lots of random coughing

🐦🔗: https://nitter.eu/NChildersMEP/status/1536997429383421952