A deodorant for a fiber of the present invention includes an a-zirconium phosphate and/or an a-titanium phosphate having no greater than 5.0 µm of a maximum particle size, 0.2 µm to 0.7 µm of a median diameter, and 0.1 µm or greater of a D10 diameter, as particle sizies.一種纖維用除臭劑以及包含前述纖維用除臭劑之除臭纖維,該纖維用除臭劑包含α磷酸鋯及/或α磷酸鈦,且在粒徑方面,中值粒徑為0.2~0.7μm、且最大粒徑在5.0μm以下、D10徑在0.1μm以上,。