Though not safe for all types of leather white vinegar diluted 50 50 in water will help to cure smells in smooth treated protected leather.
Getting smoke smell out of leather chair.
Dip an absorbent white cloth into the vinegar solution squeezing out excess liquid.
Use a nylon bristled brush in place of the cloth if the affected item is made of suede.
Wipe the leather down entirely with the cloth or brush then pat dry with a fresh lint free white cloth.
Allow the surface to dry.
That is how to get the smoke smell out of leather using vinegar.
Spritz a mixture of half vinegar half water over all leather areas including cushions and allow it to.
Combine equal portions of white vinegar and cool water in a bowl.
Using a soft fabric rub the mixture of water and vinegar into the leather surface without saturating the leather.