Inhaler and filter element for an inhaler

Filter element (9) for an inhaler (1) wherein the filter element (9) has a fastening edge (10) and a filtration zone extending in a cross section within the clamping edge (10), for which in addition the filtration zone is curved so that there is a prominent part (12) forming a flight out, characterized in that, the prominent flattened portion (12) has a flattened region (13).