(a) Business in Enclosed Buildings. All businesses, services or processing shall be conducted wholly within a completely enclosed building, except for the sale of automotive fuel, lubricants and fluids at service stations, and such outdoor display or storage of vehicles, materials and equipment as hereinbefore specifically authorized or as may be authorized by the Board of Zoning Appeals.
(b) Production for Sale at Retail. All products produced on the premises whether primary or incidental shall be sold at retail primarily on the premises where produced.
(c) Use Must be Nonobjectionable. Processes and equipment employed in goods processed or sold shall be limited to those which are not objectionable by reason of odor, dust, smoke, cinders, gas, fumes, noise, vibration, refuse matter or water carried waste.