So I shared a few weeks ago the munetoshi I have with a bit of a rust. Ive removed it and now I am re-sharpening the knife. While I am at it the knife smells a lot like iron or some rustiness... Does that smell goes away? Or is there a reason why it smells so much? After I am done sharpening it with my three stones I will be putting mineral oil on it, pER your recommendations.