If your doll smells and washing the body, face and hair doesn't remove the odour, seal the eyes with cotton balls tied on with a length of elastic, place the doll in a plastic bag and liberally sprinkle the doll with carb soda. Leave in the bag with the carb soda for about 3 days and hopefully the smell will go when you shake the carb soda out.
For normal cleaning, carefully wash your doll with a soft cloth and gentle soap and warm water, rinsing with water to remove all the soap. To clean ears, noses and mouths, use a soft toothbrush or soft nailbrush with warm water and soap. For deep mouths, get a stiffish small paintbrush. Rinse well to get rid of any soap residues.
Revitalising wig or hair
Check out my experiment in trying to revive a badly damaged wig