General high-quality horn comb is tasteless, and some horn combs will have odor, the reason is that in the production process, the choice of raw materials contain a toxic chemical, or in the processing of some kind of odor chemical agents, long-term use of the human body are harmful, so I recommend that you do not use this kind of odor of the horn comb. Although washing with soap or vinegar can reduce this odor, but the internal toxic ingredients still exist, so it is best not to use.