Health: Is there a smell from the mouth when breathing? It can be a sign of 6 serious diseases

Many researches have also been done on this, which shows that some special types of smell coming from the breath can give an indication of many serious problems happening in the body. For example, this can be a sign of diabetes, kidney failure or even cancer. Actually, some chemical compounds present in our breath indicate what is going on inside the body.

Post Published By: Sujata Biswal
Updated : 9 August 2025, 1:12 PM IST
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New Delhi: In today's busy life, people are getting affected by many types of diseases. Whenever we fall prey to any disease, many symptoms start appearing in our body. Many times when we breathe, it also smells bad. When this happens, people brush their teeth. They feel that they have eaten something wrong or the mouth has not been cleaned properly, due to which there is a bad smell from the mouth.

But sometimes it can also be a sign of many serious diseases hidden inside our body. Many researches have also been done on this, which shows that some special types of smell coming from the breath can give an indication of many serious problems happening in the body. For example, this can be a sign of diabetes, kidney failure or even cancer. Actually, some chemical compounds present in our breath indicate what is going on inside the body.

Our article today is also on this topic. We will tell you which diseases are indicated by bad breath. Let us know in detail -

Heart Failure

Let us tell you that when the amount of chemical markers called acetone and pentane increases in the breath, it can be a sign of heart failure. When our heart is unable to pump blood properly, these compounds increase.

Diabetes and Ketoacidosis

If the breath smells sweet or like nail polish, then it can be a sign of diabetic ketoacidosis (DKA). Which is a serious and life-threatening condition. In this, our body breaks down fat for energy, due to which ketones start forming. This gives a different kind of smell to the breath.

Kidney Failure

Sometimes a fish-like smell starts coming while breathing. This can also be a sign of kidney failure. It is called uremic failure in medical terms. It usually appears in the last stage of kidney disease.

Sleep apnea

If there is strong and continuous foul-smelling breath in the morning, then this can also be a symptom of sleep apnea. In this, due to repeated breath stops while sleeping, people start breathing through the mouth, due to which our mouth dries up and bacteria increase.

Allergy and postnasal drip

In case of cold, allergy or sinus problems, mucus starts forming in large quantities, which accumulates at the back of the throat and causes bad smell. When the nose is blocked, people breathe through the mouth, due to which the mouth dries up and starts smelling.

Tooth decay and gum disease

Many times when you do not clean your mouth properly, or there are bugs in the teeth, swelling in the gums and infection also cause bad breath.

Pay attention to these things

Usually most of the time bad breath is just a problem related to oral hygiene, but if this problem persists for a long time and other symptoms also appear, then it can be a sign of a serious disease. In such a case, you should get it checked immediately by a doctor or dentist.

Location : 
  • New Delhi

Published : 
  • 9 August 2025, 1:12 PM IST