tube

"Every house in a Jewish town has a mezuzah on the door, which is like a little tube with a little Torah scroll inside and when you come through, you touch it."

He said: "It's an odd one but I can recognise it anywhere. I've been on a tube before and been like 'Are you from Corby?' There is nothing like it."

The operation prevents pregnancy by blocking a woman's fallopian tubes and is sometimes referred to as "getting your tubes tied".

At 6 months, she could no longer take a bottle and needed a feeding tube.

The researchers, from UCL and the University of Ljubljana in Slovenia, did so by inserting a tiny tube so they were able measure the scent without taking any physical samples.