nose test

/N OW1 Z T EH0 S T/
noun
  1. 1

    (idiomatic) An informal method for determining whether something is authentic, credible, or ethical, by using one's common sense or sense of propriety.

  2. 2

    An inspection of an object using the sense of smell, as for freshness of food or cleanliness of clothing.

  3. 3

    (physiology) An inspection of the nasal passages or a trial of their function, as for breathing difficulties or olfactory ability.