Science
Sorry to break it to you...
The anomaly has long perplexed researchers.
Only 40% of people can smell it.
It's more than 99 million years old.
'There is a dramatic difference in brain activity during inhalation compared with exhalation.'
Scientists said they were 'optimistic' after tests on mice.
This is devastating.
The same prediction model previously predicted Zika and Ebola.