A deodorant includes a powder of an amine salt of a phosphorus inorganic acid, the powder having an average particle diameter of 0.1 to 30 .mu.m. The amine salt of a phosphorus inorganic acid is preferably an ammonium salt. Deodorant products including the deodorant such as an adhesive, a paint and a foamed material can be substantially reduced in formaldehyde emission therefrom, and can deodorize formaldehyde existed in the environment.