A common form of skin cancer could be diagnosed by the distinctive chemical "scent" it gives off, say US experts.
Philadelphia's Monell Center sampled the air directly above basal cell carcinomas and found it was different to similar samples from healthy skin.
— Read more in Machine 'sniffs out skin cancer' at BBC News.
The next time someone says, “I smell danger in the air,” that might literally be true — and the odor might be coming from you.
At the tip of the noses of mammals, including humans, is a ball of nerve cells known as the Grueneberg ganglion [...] Only in last few years, after scientists devised strains of mice that glow green under fluorescent light, did they deduce that the Grueneberg ganglion is a component of the olfactory system.
— Read more in How the Nose Sniffs Danger in the Air at the New York Times.