If your piano has sustained smoke damage, do not touch the piano with bare hands. The smoke residue is toxic and your finger oils react with the residue causing it to smear and absorb deeper into the wood. If you must touch the piano, wear latex surgical gloves. Smoke is acidic, causing discoloration, corrosion and overall damage to a piano. The process of removing smoke residue and odor requires many steps with specially developed products for the piano. The corrosive nature of smoke makes it essential to have your piano restored as soon as possible after it has sustained damage.