Have you ever been hit with a smell so pungent that it didn’t stop and seemed to linger in your nostrils for hours on end? Is it just an environmental whiff, or something else is the cause of bas smell in your nose?

Whether it’s the stench of rotting garbage or the acrid odor of spoiled milk, bad smells have a way of creeping their way into our brains and refusing to let go.

But what if that weird smell is coming from inside your own nose? That’s right; this unsettling situation often affects millions of people around the world.

Top 10 Reasons For Bad Smell Harboring Your Nose

Let’s take a look at the top 10 potential reasons for this issue:

Parosmia – Covid 19

In this condition, your sense of smell alters, and you cannot detect strong scents or distinguish between the two. Parosmia is a complication seen after a person suffers from COVID-19. It may start on its own or in connection with other respiratory symptoms like a runny or blocked nose.

Some people who undergo parosmia after contracting COVID-19 say that the smell of their typical foods makes them feel burned or rotten.


People with this medical condition have fungi balls in their nasal passages without even being aware of it. These fungus balls can get infected by bacteria, which may cause an odd odor to develop in the nose.

Nose Polyps

Polyps are nasal growths that are not cancerous. This occurs on by persistent pain and inflammation. It intensifies facial pressure and impairs the sense of smell, causing the nose to mistakenly identify unpleasant odors.


The stomach is where our medications are metabolized. The tongue could also retain some debris. Together, they create an odd stench that is detectable to both their nose and those of others.

Dry Mouth

It’s important to stay hydrated to get rid of the weird smell in your mouth that your nose picks up when you’re sick or healthy. Acids must undergo neutralization by saliva in order for the odor to avoid forming.

Nasal Vestibulitis

The bad smell in your nose by this illness is due to an overgrowth of germs on the frontal nostrils. If you pick your nose frequently, you are more prone to get infections that cause an unpleasant smell in your nose.

GI Tract Issues

Acid reflux, often known as GERD, is characterized by the reflux or flushing of gastric acid from the stomach into the body. This results in the creation of a foul odor in the nostrils as well as a metallic taste in the mouth.


There are two types of sinus infections: chronic and acute. This virus has the potential to distort your sense of smell, filling your nose in an unusual way. Sinus infections are typically, but not always, because of a virus.

In immune-compromised people, sinus infections are prevalent. Knowing the etiology is critical for effective infection treatment.Dental Issues

Dental cavities are a result of bacterial growth in the mouth. Cavities appear as black or brown dot or line that grows into huge hole. These germs in the hole produce sulfur gas in the roof of the mouth, which goes up to the nose and stinks horribly.

Furthermore, people who do not practice proper oral hygiene frequently have food debris left in their mouths, which is the main cause of strange and unpleasant odors in those around them.


Some food items trigger a bad smell in the mouth that travels up to the nose; examples are:

  • Onions
  • Garlic
  • Ginger
  • Coffee
  • Tea
  • Spicy food

Final Note

Contact San Ramon Urgent Care for your troubles. You can find us at 9140 Alcosta Blvd Ste D, San Ramon, CA 94583. Call us at (925) 361-5959 (San Ramon), (209) 825-5155 (Manteca), or (209) 983-9000 (Lathrop) for more information.

Skip to content