Ozone machine

[Howard F Jackson]

Hello list:
Has anyone out there had any experience removing smoke odors from pianos
with an Ozone Machine that does something to the oxygen.  
Does it work and does it have any adverse effect on the piano?  I've got
two grands and a studio that were in a building that had a fire.  They
were closed and not in the room where the fire was.  After cleaning they
still stink!

Howard