We emit a barrage of smelly chemicals through our pores and in our breath. In most cases, what we emit is innocuous and mostly related to our cleanliness and grooming. But some odours are a sign that we might be getting ill, and could be used to diagnose several diseases. A new smell may indicate that something has changed in your body.
Can diseases have a noticeable impact on our sense of smell? To stay alive, our bodies must continually convert food and drink into energy. It does this through a series of chemical reactions in our cells that convert sugars from our food into energy our body can use. These chemical reactions produce molecules which can easily evaporate and potentially be picked up by our noses. Having a disease can change the specific molecules produced, altering our body odour fingerprint.