A new study from University of East Anglia, reveals huge range of practical and emotional impacts caused by loss of smell.

Smell disorders affect around 5% people in the world. They either lose their sense of smell or change the way they perceive odours. There are some cases where people perceive smells that are not there at all.

Previous researches have found that people who have lost the sense of smell suffer from high rates of depression, anxiety, isolation and relationship difficulties. One really big problem with losing the sense of smell is not being able to smell food that has gone off, or not being able to smell gas or smoke.

A large number do not enjoy eating, and have loss of appetite and weight. Some others eat more food with low nutritional value that was high in fat, salt and sugar, and had consequently gained weight.