"A smell resembling oil presented on-board," officials said. Paramedics who were called to the scene checked 15 people.
Researchers believe smells can tap into the brain's reward circuit.
The aircraft was carrying 136 passengers from San Francisco to New Orleans when the mysterious smell forced an unscheduled stop.
The system was able to pass a real medical diagnosis exam.
The system could be used to detect a range of diseases.
The radiated tortoise is a popular pet in Asia, and some smuggle them out of Madagascar to meet demand.
Science debunks the myth that humans have a poor sense of smell.
We can read and view history but with the development of the odor wheel, we may be able to smell it, too.
Participants who had suffered a complete loss of smell were found to have a 19 percent chance of dying early.
Susan Hedman's resignation comes as criticism of both the state and federal response to the toxic-water crisis continues to grow.
Scent artist Sissel Tolaas's goal is to help you make memories with your nose.