The human nose can detect more than one trillion distinct scents, but it isn't so great at picking up your own odours. There's always a chance you reek something foul and just don't realise it. If that's a fear of yours, here's how you can find out for sure.

Having bad garlic breath is the social equivalent of uncontrollably breathing fire. But fear not, garlic lover, there might be a cure. A recent study suggests chewing on some raw lettuce or apple will help reduce the odour.