Imagine a world where you have no sense of smell.

By Martin Barber BBC News, Norfolk

Sarah Page just wants to sense the comforting smell of her boyfriend Andy and other everyday pleasures

Imagine a world where you have no sense of smell.

The aromas of a morning coffee, fresh flowers, clean washing, newly baked bread or perhaps the comforting scent of loved ones – all gone.

That world is very real to an estimated three million people in the UK who spend their lives with no sense of smell – a condition known as anosmia.

It can lead to life-threatening situations, isolation, depression and a loss of interest in food as 80% of what we taste comes from smell. The common cold is one of a number of causes.