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The brush odor will go away. Faster is to shampoo it. The soap might need more working with more water added a little at a time. Sounds like it should be whipped up in a bowl, or big coffee mug or...

Big word of caution. Despite ANY of your sharpening experience, razors are to knives like the distance from Earth to Alpha Centari. Read the Library section on honing and better yet, find a Mentor...