also: いずこともなく
aimlessly; without any particular destination
Describes moving or wandering without a clear goal or direction. Often used with verbs of motion like 歩く or 出かける.
He was walking aimlessly through the streets.
somehow; from somewhere; without knowing where
Used when something happens or appears without a clear source or reason, often with verbs like 聞こえる or 現れる. The 'somehow' nuance is less common than the 'aimlessly' sense.
どこともなくいい匂いが漂ってきた。
A nice smell drifted in from somewhere.