Passengers line up to check in for flights to the United States at Vancouver International Airport in Richmond, B.C., on Monday December 28, 2009. Temperature checks. Masked passengers. Longer lines. Colder meals. If air travel wasn’t tedious enough before the pandemic, it is now — and will remain so for some time, experts say, as hygiene controls tussle with profit motives at airlines across the globe. THE CANADIAN PRESS/Darryl Dyck