An electronic smoking device (10) includes a power supply portion (12) comprising a power supply (18) as well as an atomizer/liquid reservoir portion (14) comprising a refillable liquid reservoir (34) adapted for storing a liquid, and an atomizer (26) operable when connected to the power supply (18) to atomize liquid stored in the liquid reservoir (34). The atomizer/liquid reservoir portion (14) comprises a liquid filling channel (40) and an air outlet channel (42) at least partially separate from the liquid filling channel (40). The liquid filling channel (40) communicates with the liquid reservoir (34) and is configured to let pass liquid received from outside the electronic smoking device (10) into the liquid reservoir (34). The air outlet channel (42) communicates with the liquid reservoir (34) and is configured to let pass air out of the liquid reservoir (34).