It shall be unlawful in all cases to sell or offer for sale milk or cream from diseased or unhealthy animals, as certified to be unhealthy or diseased by the State Veterinarian; milk, cream, or any of their derivatives handled by any person suffering from or coming in contact with persons afflicted with any contagious disease; to sell or offer for sale any milk, cream, or any of their derivatives which have been exposed to contamination or into which may have fallen any insanitary articles or any foreign substance which would render the milk, cream, or the product manufactured therefrom, unfit for human consumption.