type structure at a temperature of not lower than 40 u00b0 c a content of manganese zinc nickel copper or cobalt to be contained in the ozone decomposing catalyst is preferably 3 to 50 mole more preferably 10 to 30 mole based on an iron element of the ozone decomposing catalyst if the content is less than 3 mole a production rate of a spinel type structure is reduced and the ozone decomposing performance capability is reduced on the other hand if the content exceeds 50 mole production of a compound derived from manganese zinc nickel copper or cobalt is increased and the ozone decomposing performance capability is reduced a structure of the iron compound or the iron compound having a spinel type structure can be confirmed by x ray diffraction on the other hand regarding iron manganese zinc nickel copper or cobalt contained in the ozone decomposing catalyst a content of a metal element such as manganese zinc nickel copper or cobalt can be confirmed by fluorescent x ray the ozone decomposing catalyst containing the iron compound and the iron compound having a spinel type structure can be not only used alone in a filler layer by molding into a powder or a pellet but also can be used by mixing with or jointly using other deodorizing agent or decomposing agent alternatively the catalyst can be used by applying to a non woven fabric a woven fabric and a sheet substrate and molding and.