New research indicates that dogs can detect human stress through scent and that this sensory information affects their emotions and behavior. This ability is present even with unfamiliar humans. Dr. Nicola Rooney, a senior lecturer at Bristol Veterinary School, highlighted that stressed human odors impact a dog’s emotional state, perception of rewards, and learning capacity. The study reinforces the concept that dogs are highly attuned to human emotions, not only through direct interaction but also via airborne scents.