To solve the problem that the high-concentration offensive smell component of a dirt during an exchange of a diaper of the sick who remains lying down or a patient in a hospital is hardly processed and to provide a portable offensive smell processor for processing the offensive smell in the periphery of a bed of the patient in the hospital in a hospice which can dispose of the offensive smell and prevent the diffusion of the offensive smell to the periphery during the exchange of the diaper.

In a method for processing the offensive smell by a portable device with casters, an air passage is provided which is surrounded by a light and soft hood so as not to diffuse the high-concentration offensive component to the periphery. The method combinedly includes an offensive smell diffusion-preventing process for supplying air to the inner part of the hood by a circulating fan operated by a battery to expand the hood and circulate the air, and a deodorizing disposal process composed of a porous filter using an ammonia adsorbing natural zeolite to which a sulfate radical is applied in the air passage, a porous filter using a photocatalyst titanium oxide and an ultraviolet lamp for exciting the porous filter.