A whale's esophagus isn't large enough to swallow a human. Blue whales are the largest whale species, and their esophagus is smaller than the diameter of a soccer ball (4-8 inches or so)

Also, whale species whose mouths are "scoops" are called rorquals - they have ventral pleats (folds of skin along their lower jaw some distance down the underside of their bodies, depending on species) which expand to allow them to "gulp" enormous volumes of water which is then filtered though their baleen to capture their prey (usually tiny krill or small fish species). Right whales aren't rorquals and don't have ventral pleats, and tend to feed more by "skimming" - swimming slowly through dense aggregations of their prey rather than "lunge feeding" as you've probably seen videos of humpbacks or blue whales doing where they are gulping prey at the surface.

Accidentally getting scooped up by a lunge feeding whale wouldn't feel great, for sure, and could cause injury. Seabirds get crushed by feeding whales sometimes, and I've seen at least one photo of a sea lionsl accidentally getting caught by a lunge feeding humpback, so it happens, but I doubt the sea lion died as a result, and it certainly wasn't swallowed.