Question

never shall i forget the little faces of the children whose bodies i saw turnto wreaths of smoke. Is this a metaphor or a simile?

Our senses were blunted; everything was blurred as in a fog. Simile or metaphor?

It seemed like an eternity to me. Similar or metaphor?

Answer 1

It ins simile, not similar. Similes are comparisons made with Like or as, whereas metaphors are comparisons made without those two words. The answer is Simile.

Answer 2

This  is  a metaphor  for the both of them.