I'm a big fan of the flight search engine kiwi.com but there is one feature of it that annoys me over and over.
When I specify as departure airport FRA (Frankfurt International Airport), I am getting suggestions also from HHN ("Frankfurt" Hahn, a cumbersome 2h bus ride from Frankfurt city center and served mainly by Ryanair).
How can I turn this off? I am not selecting Frankfurt (the city), where this might be justified. This feature/bug does not exist for say Rome: when I select FCO, I am not getting any flights out of CIA just as expected.