Any suggestions for cleaning heavy smoke damage?

[umlets]

Hello, anybody know anything that works well on a can with heavy smoke damage from a fire, turned white a dirty brown color. Anything that will lift off some of the smoke damage, without hurting original paint underneath. Old cone top from the late thirtys. thanks mark

[Rustycan]

Mark, there are a number of previous posts on this very subject- go to the search tab and search for smoke or smoke removal and you should be able to find them. - Good Luck