Description : Open window or closed window? An unheated room that doesn't mold?
Last Answer : I found it: "I think it's good to be open for a few hours a day because the air won't be dirty if there is no moisture. The walls don't mold for many years. etc., the window condensed and it ... on the walls of the rooms, we ventilated it every day and the problem disappeared. It's worth a try. "