Washing machine, open or closed window? Either of the 2 options saves more

Instructions for leaving the door of the washing machine
According to the experts, the door should remain open for 24 hours after the washing has been completed, to allow the washing machine time to dry completely and to avoid the formation of unpleasant odours and mould.

Experts recommend leaving the door open even for several days to circulate the air properly inside the aircraft. In this way, you give yourself the opportunity to use the same washing machine for years rather than for short periods.