One of the most frequently mentioned processes is metabolic alteration. When key organs like the liver or kidneys lose their ability to filter and eliminate toxins, certain substances begin to accumulate in the body. Some of these compounds can be released through breath, skin, or bodily fluids, generating unusual aromas. Some people describe them as sweetish, metallic, or simply different from the body’s usual odors.
Changes in blood circulation, common in patients with serious illnesses or in states of extreme weakness, also play a role. When blood flow to the skin and extremities is reduced, variations in temperature, humidity, and skin chemistry occur. These conditions can promote the development of stronger odors, especially if the person remains on prolonged bed rest or has very limited mobility.
Another relevant factor is decreased appetite and fluid intake, common in the final stages of many illnesses. Dehydration and fasting alter the way the body obtains energy, which can generate volatile compounds noticeable in the breath or the surrounding environment. These smells do not pose a danger to those accompanying the patient, but they are a sign of an organism experiencing extreme fragility
