sniff test

noun3

1. •
   An inspection of an object by smelling it, as for cleanliness of clothing or freshness of food.

   • Let wood dry overnight so solvent evaporates. Mr. [Hugh] Fite uses the sniff test: when he no longer smells solvent, the surface is likely dry enough. — 1988
2. •
   (figurative) An informal check of whether an idea or proposal is credible, ethical, etc., using one's common sense or sense of propriety.

   • But does it pass the sniff test?
3. •
   A medical procedure involving a person taking quick, short sniffs which cause contraction of the diaphragm during a fluoroscopy, enabling abnormalities of the diaphragm to be detected; diaphragm fluoroscopy.