It all depends on what kind of mask you use. People have different opinions about masks and new rules in society. For example there are masks that protect 2 hours and there are masks that protect 24 hours. So first decide which mask you want to use. In general I do not believe in the efficiency of mask but I admit that in close places (rooms) it cold save you but not for long time. Now if you want to travel you should pass the covid test within 24 hours before so if you are looking to find more info about covid test then you can check https://www.confirmbiosciences.com/p...va-drug-tests/