PROBLEM TO BE SOLVED: To provide a deodorizer and a deodorization system capable of producing a deodorant working fluid excellent with regard to sedimentation suppressing properties and low foamability, and capable of deodorization of both acid and base components, having high deodorant performance to offensive odors such as sweat smell, difficult to lower the deodorant performance even after repetitive washing, capable of producing a textile product having high water absorption and feeling, with excellent sedimentation suppressing properties and also to provide a deodorant working fluid and a textile product obtained using the same.SOLUTION: A deodorizer includes: (a) 100 pts.mass water-insoluble metal salt (b) 8-60 pts.mass dispersant (c) 5-150 pts.mass binder polymer and (d) 200-1000 pts.mass water.