No use shall be permitted and no process, equipment or materials shall be employed which are found by the city planning commission to be objectionable to persons residing or working in the vicinity or injurious to property located in the vicinity by reason of odor, fumes, dust, smoke, cinders, dirt, refuse, water carried wastes, noise, vibrations, illumination, glare, unsightliness or traffic, or to involve any hazard of fire or explosion, provided that permitted agricultural pursuits conducted in accord with good practice shall not be deemed a nuisance.