To provide a deodorizer, using natural raw material having high safety, having excellent deodorizing effect to ammonia-base odor and odor of isovaleric acid or the like, and also having an expected effect of relaxing the mind and body and improving insomnia, an article having a deodorizing effect using it, an odor reducing system and an odor reducing method.

This cushion B1 for caring as the article having a deodorizing effect includes a cushion body elliptical in section, and an insert part formed tapered toward the tip side to be easily inserted under the waist of a lying person to be cared. The deodorizer A2 is stored in the cushion body to be ventilated by a ventilation part 41. The deodorizer A2 is filled with the roots of vetivers cut to a required length. The insert part is formed to be curved in the width direction of the cushion body.