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Velvet Digest

Can dentists smell your breath?

Author

Christopher Snyder

Updated on May 29, 2026

Your dentist will likely smell both the breath from your mouth and the breath from your nose and rate the odor on a scale. Because the back of the tongue is most often the source of the smell, your dentist may also scrape it and rate its odor.

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Then, can you smell your own breath?

Another possible reason is our natural inability to actually smell our own breath, caused by an opening in the back of the mouth behind the soft palate, called the pharynx, which connects it to the nose.

Likewise, why does my breath still smell after brushing my teeth? Failing to brush and floss your teeth properly and regularly can make your breath smell because plaque and bacteria accumulate on and between your teeth. Gum disease can also contribute to foul-smelling breath. It's caused by neglecting oral hygiene.

Moreover, can you smell someone's breath when kissing?

Kissing is like a taste test and a smell test. This isn't at all about breath, although I think we all can agree that stinky breath is lame. Researchers have discovered that there is a scent we pick up on when we are kissing -- and it's believed to be related to a person's DNA.

Why does my floss smell?

There are a few reasons why someone might have a bad odor on their floss. The most common reason for malodor on the floss is gum disease or periodontal disease. When the floss is placed under the gums during normal flossing the odors can get on the floss and this may be noticeable when you smell the floss.

Related Question Answers

Why does my drool smell bad?

Some of the bacteria in your mouth are anaerobic, meaning that they don't need oxygen to survive, Dr. And that's the bacteria that smells the worst, because it gives off a sulphur smell. "As soon as the saliva dries up, you're left with residual bacteria, and that's what you're smelling," she says.

What is the best toothpaste for bad breath?

Best Toothpaste for Bad Breath
  • TheraBreath Fresh Breath Toothpaste, Mild Mint Flavor, 4 Ounce Tube (Pack of 2)
  • Charcoal Teeth Whitening Toothpaste Activated - All Natural Black Fluoride Free Tooth Whitener Paste Powder - Best For White Teeth + Fresh Breath Tea Tree Oil / Peppermint Flavor - Carbon+ MADE IN USA.

Why can't we smell our own body odor?

Your nose helps you quickly detect things that are new and strange, but it has no use for the boring and typical. That's where more long-term loss of sensitivity comes in: Over time, even if the receptors in your nose pick up on a smell, your brain might start filtering it out as useless information.

Why do I have bad breath?

Persistent bad breath or a bad taste in the mouth may be a warning sign of gum (periodontal) disease. Gum disease is caused by the buildup of plaque on teeth. Bacteria cause the formation of toxins to form, which irritate the gums. The medical condition dry mouth (also called xerostomia) also can cause bad breath.

Does everyone have bad breath?

Bad breath is often caused by a buildup of bacteria in your mouth that causes inflammation and gives off noxious odors or gases that smell like sulfur -- or worse. Everybody has nasty breath at some point, like when you get out of bed in the morning.

How do you fix bad breath?

Following these tips can help you fight bad breath as well as keep your mouth healthy on a daily basis.
  1. Brush teeth twice a day.
  2. Floss daily.
  3. Brush or scrape your tongue.
  4. Use a mouth rinse.
  5. Visit your dentist.
  6. Quit smoking and avoid tobacco products.
  7. Wet your whistle.
  8. Eat a piece of sugarless candy or chew sugarless gum.

Do cavities smell like poop?

It occurs when the pulp inside the tooth decays. This may lead to a bacterial infection, which can result in pain, swelling, and breath that smells like feces due to a buildup of pus. An abscessed tooth may not have painful symptoms until the infection is very advanced.

Can baking soda kill bad breath?

Studies have shown that baking soda, also known as sodium bicarbonate, can effectively kill bacteria in the mouth. Research indicates that toothpastes containing high concentrations of baking soda effectively reduce bad breath.

What foods fight bad breath?

Munch on these 10 foods to beat bad breath.
  • Raw fruits and veggies. Crisp fruits and veggies like celery, cucumbers, pears, and apples are a 2-in-1 fix for bad breath.
  • Probiotic yogurt. Yogurt with probiotics contains good bacteria.
  • Parsley and basil.
  • Cherries.
  • Green tea.
  • Sugarless gum.
  • Melons and citrus.
  • Chlorophyll.

What causes chronic bad breath?

They include:
  • Food. The breakdown of food particles in and around your teeth can increase bacteria and cause a foul odor.
  • Tobacco products. Smoking causes its own unpleasant mouth odor.
  • Poor dental hygiene.
  • Dry mouth.
  • Medications.
  • Infections in your mouth.
  • Other mouth, nose and throat conditions.
  • Other causes.

What causes white coating on tongue?

White tongue is the result of an overgrowth and swelling of the fingerlike projections (papillae) on the surface of your tongue. The appearance of a white coating is caused by debris, bacteria and dead cells getting lodged between the enlarged and sometimes inflamed papillae.

Can constipation cause bad breath?

Poor digestion, constipation, or bowel disorders can all cause unfortunate odor on the breath. If you frequently experience acid reflux, the odors from recently consumed foods may easily make their way back up the esophagus and out the mouth, causing bad breath.

What is dry mouth a sign of?

Dry mouth can be due to certain health conditions, such as diabetes, stroke, yeast infection (thrush) in your mouth or Alzheimer's disease, or due to autoimmune diseases, such as Sjogren's syndrome or HIV/AIDS. Snoring and breathing with your mouth open also can contribute to dry mouth. Tobacco and alcohol use.

Why does kissing turn you on?

Along with the oxytocin and dopamine that make you feel affection and euphoria, kissing releases serotonin — another feel-good chemical. It also lowers cortisol levels so you feel more relaxed, making for a good time all around.

How do you make sure you smell fresh down there?

The following techniques may help you naturally eliminate unusual vaginal odors:
  1. Practice good hygiene. Clean the outside of your vagina regularly with a washcloth and mild soap.
  2. Use only exterior deodorizing products.
  3. Change your underwear.
  4. Consider a pH product.
  5. Try essential oils.
  6. Soak in vinegar.
  7. Prescription treatments.

Why does my wisdom tooth smell like poop?

Abscessed tooth It occurs when the pulp inside the tooth decays. This may lead to a bacterial infection, which can result in pain, swelling, and breath that smells like feces due to a buildup of pus. An abscessed tooth may not have painful symptoms until the infection is very advanced.

What doctor do you see for bad breath?

If the bad breath is due to improper oral healthcare, in most cases your dentist will treat the cause of the problem. If the cause is an underlying gum disease, the condition may be treated by your dentist. Or you may be referred to an oral specialist--in most cases, a periodontist.

Can stress cause bad breath?

There is a link between gum disease and stress, which may influence bad breath -- or halitosis, as it's also known. One of the other factors that actually might come into play is that stress may cause you to be lax with your oral hygiene which is likely to have an effect on your breath.

How long does onion breath last?

The distinctive smell is caused by sulfur-containing chemicals in garlic and onion. The smell can linger on a person's breath for hours and even overnight, which discourages some people from eating these vegetables. Luckily, many home remedies can prevent or eliminate bad breath. Below, we describe 12 simple methods.