Tantalisingly, the idea hints at quantum effects occurring in biological systems – an idea that is itself driving a new field of science.
But the theory – first put forward by Luca Turin, now of the Fleming Biomedical Research Sciences Centre in Greece – remains contested and divisive.
The idea that molecules’ shapes are the only link to their smell is well entrenched, but Dr Turin said there were holes in the idea.
He gave the example of molecules that include sulphur and hydrogen atoms bonded together – they may take a wide range of shapes, but all of them smell of rotten eggs.
via (Touch Me!)