2) Musty smell
When you haven’t opened the windows for a long time, a stale smell could form. In order to eliminate it, you’ll have to spray a solution made of water mixed with white wine. As another solution, you can also prepare a mixture of white vinegar, warm water, 3 drops of lemon essential oil and a tablespoon of baking soda. If this kind of smell comes from a piece of furniture, spray the above-mentioned mixture, and place some small bowls with clay or baking soda in addition.