nothing to sneeze at
The idiom “nothing to sneeze at” is used to describe something that is NOT small or unimportant; something to be taken seriously.
In the early 1800s people were already using this saying. Perhaps it comes from the idea of turning your nose up at something or someone to express scorn or contempt. Since sneezes come from your nose, something that’s “not to be sneezed at” should be treated as important or worthy.
Here is the idiom being used in a sentence:
He won the silver medal and not the gold, but a silver is nothing to sneeze at.