Does cancer have a smell? Scientists have been exploring this idea for the last two decades, but for Chase Johnson, a 36-year-old attorney in North Carolina, the idea became real in an unexpected way.

Her German shepherd saved her life by detecting cancer in its earliest stage–and now an E-nose can detect tumors with AI chemical training.

Add Yahoo as a preferred source to see more of our stories on Google. Every pet parent's worst nightmare is when their furry friend is hurt or sick. Nothing is worse than when a dog gives you that ...