asked
Why is sea air good for you?
It isn't, particularly. In Victorian England, seaside resorts got a reputation for having healthy air – maybe in comparison to the era's city smogs. The seaside's "bracing" smell is caused by a chemical produced by coastal bacteria, present in very low concentrations. But a study last year found that sea salt can react with chemicals in marine exhaust fumes to worsen the atmospheric pollution in a busy port.
