New heart failure risk sign you may notice when cooking - and many are unaware of it
![New heart failure risk sign you may notice when cooking - and many are unaware of it](https://i2-prod.mirror.co.uk/news/uk-news/article33076872.ece/ALTERNATES/s615/1_gettyimages-1271701203.jpg)
A study has found a strong link between loss of sense of smell and heart failure, the single biggest cause of death in the UK. But a third of people don't know they've lost their sense of smell