No egg shall be broken for use as food:
a. Which has decomposed to such an extent that it has a putrefactive odor and is, therefore, of that grade commonly known as "rots" ; or
b. Which is wholly or partially decomposed, mouldy, or sour, or which is partially hatched, contains blood rings or veins, or in which the yolk is broken, and is, therefore, of that grade commonly known as "spots" .