It shall be unlawful to store or sell fireworks:
a. In any building where paints, oils or varnishes are manufactured or kept for use or sale, unless paints, oils and varnishes are in original unbroken containers;
b. In any building where matches (other than approved safety matches), rosin, turpentine, gasoline, or other highly inflammable substances, or substances which may generate inflammable vapors are used, stored or kept for sale;
c. In any building where stoves or exposed flame are used in the part of the building where fireworks are stored or offered for sale.