What Dogs Don’t Smell – 18 Things Your Dog’s Nose Wont Perceive.

What Dogs Don't Smell

What dogs Don’t Smell? Dogs are great at detecting smells, but they can’t smell everything.

So make sure you keep these out of reach when your pup is around!

Some of the things on this list are not scents, but some items on here could be harmful to a dog’s health if eaten.

write a blog outline on the Top 20 things dogs can’t smell

1. Gas leaks

A dog can’t smell gas leaks because of the way its nose is constructed.

Dogs have an exposed olfactory system, which means that they can smell various odors.

They also have 300 million olfactory receptors, which is five times more than humans.

Dogs can sense some things that people cannot. For example, dogs can detect some cancer cells in urine or stool samples with 98% accuracy.

However, they cannot smell gas leaks without training, and they don’t always know what to do when they smell them.

What Dogs Don't Smell

2. Difference between cologne and perfume.

The reason your dog can’t sniff out these two different scents is that they’re perceived as two similar olfactory cues.

Both fragrances contain a wide range of complex molecules like chemicals like phenyl ethyl alcohol that give them fruity or flowery odors.

These smells often overlap, likely thanks in part to our brain’s unique ability to create “smells” from different fragrances based on past exposures and memories (this is why our grandmother’s house always smells like freshly baked cookies).

3. Bananas.

Can dogs smell bananas? The answer is no; they can’t.

The human nose has a much greater sense of smell than a dog’s olfactory system, and this means that there are some smells that our canine friends will never be able to detect.

Many fruits, including grapes and especially bananas, have low odor intensity due to their lower concentration of organic molecules called terpenes.

Terpenes give the banana its scent, but most humans will struggle to pick up on it! So few terpenes are present in a ripe banana that it’s almost impossible for us to distinguish the fruit’s aroma from water with our noses alone – but your pooch

4. Through metal

Dogs may be able to detect the presence of some scents in this way, but they’re not practical when there are significant amounts of metal in between them and their target.

It means that dogs can’t sniff out drugs or bombs hidden behind walls or locked doors.

Scientists have recently trained dogs to search for certain scents on passengers at airports, which shows how capable their noses are despite being unable to use them in every situation.

5. “Doggy odor.”

Not everyone knows this, but dogs emit two smells: one from sweat glands and another from apocrine glands (which are located near hair follicles).

The scent that comes from apocrine glands is much stronger than the scent produced by our normal sweat glands; it’s also very potent if you’ve ever come into contact with a stinky dog!

This particular is difficult for even humans to detect, so it’s not surprising that dogs can’t smell it.

What dogs don't smell

6. Changes in blood sugar levels

Detecting low blood sugar levels is out of the question for your pup, but not because they can’t smell it.

A dog’s sharp sense of smell would be effective in this situation – if their nose weren’t so high up on the body!

Canine noses are usually between 7 and 8 inches above ground level, which means that anything lower than your knees will be complicated for them to sniff out.

That means that while dogs can smell many scents that we can’t, there are some that they might struggle with.

7. Fear.

Dogs use their sense of smell for various purposes: they mark territory and navigate using their noses, and even detect if an animal or human is sick or pregnant before any symptoms have shown themselves.

However, dogs cannot smell our emotions like happiness, anger, sadness, and fear- it’s simply not possible.

Our feelings give off certain chemicals that only humans can smell at such low concentrations

This means that dogs won’t detect these specific aromas until we show our feelings on the outside!

8. Human emotions.

Though you know how your pup loves cuddles, snuggles, and scratches behind the ear, he might not be able to pick up on scents related to happiness or sadness.

While some dogs are brilliant and can pick up on these feelings with their senses of vision, touch, and hearing alone, you’ll find that they won’t be able to sniff out your strong emotions so easily!

9. Past their breed.

Not only do our pets have superior noses when compared to us, but they also have an incredibly acute sense of smell that is unlike anything we’ve ever experienced.

While many breeds of dogs may appear similar due to shared traits like size or appearance, there are specific characteristics that they will all maintain throughout their lives- including the distinct scent of their breed!

So if you’re looking for a change in odor after getting yourself a new pet, it might be time for a trip to the groomer!

10. Illness.

Dogs can detect pregnancy in humans, but that’s not always because their sense of smell is so much more powerful than ours.

It has a lot more to do with the ears, as changes in hormone levels in expectant mothers cause bodily fluids like blood and sweat to change scent – which animals, including your dog, can easily detect!

When it comes to illness, however, there’s no way for dogs to pick up on scents that indicate you’re sick until you show visual symptoms.

That being said, having pets around the home during the cold season has scientific benefits, which you might want to take into consideration before letting Fido take a long nap outside while you’re ill!

11. Through their skin.

Many breeds of dogs are extremely in tune with their sense of smell, which is why they might choose to roll around in the grass or dirt before lying down on the carpet.

Your dog will quickly pick up any scents that remain on his body after rolling out there – no matter how dirty or wet he gets!

Although this could be considered one of their more unpleasant habits, your dog’s olfactory senses are pretty sensitive.

What dogs don't smell

12. Cancer in humans.

We’ve all heard stories about dogs being able to detect cancer early thanks to their highly-sensitive noses, but it turns out that it isn’t quite as simple as it seems!

While some dogs can pick up on certain types of cancer, there is no evidence that they can do so all across the board.

Of course, if you think your dog might be able to detect a specific type of cancer in you, we recommend seeking medical attention and bringing along Fido for a checkup too!

13. Emotions.

Many people assume that our pets understand their place in our lives based on how we treat them and what we say – but this couldn’t be further from the truth!

Though dogs are exceptional at reading human facial expressions

They don’t seem to show any signs of recognizing smells related to different feelings.

That means that they won’t be able to sense when you’re afraid of them, annoyed with them, or in love!

14. Through their mouth.

Dogs can detect smells through their nose as we do with our mouths.

However, they aren’t able to smell through the back of their throat.

It is because they don’t have anything opening up to it and allowing air in, which is why they do things like open their mouths widely when sniffing something.

15. Soap.

Dogs may be able to pick up on the difference between various types of colognes and perfumes, but that doesn’t mean they’re smelling the difference!

While perfume companies add certain scents to their creations for humans to enjoy, dogs are simply detecting the different chemicals that cause human reactions, including adrenaline rushes associated with stress!


What dogs don't smell

16. Through walls.

Although many people think that dogs are always catching scents even when we don’t know they’re around – this isn’t true.

They can’t smell anything through anything except a crack or hole in a wall.

That is why it’s so important to keep your windows and doors closed whenever you have an indoor pet!

17. If their food has spoiled.

As animals with a powerful sense of smell, it makes perfect sense that dogs would be able to pick up on all kinds of scents related to the food they eat.

Although dogs are incredibly in tune with their noses, they can’t always differentiate between fresh and spoiled foods because smells associated with spoiling don’t register!

If you have a picky eater dog or tend to get sick from certain types of food, this might explain why!

18. Through plastic bags.

While many people believe that dogs have been trained to sniff out drugs or explosives from inside locked plastic bags, it turns out that the truth behind this unlikely story is quite different!

While some K9 units have been trained to do so for specific purposes, most dogs will be unable to sniff through a bag to find what’s on the other side.

What dogs don't smell


Dogs aren’t able to pick up on the difference between cologne and perfume.

They can only detect different chemicals that cause reactions in humans, including adrenaline rushes associated with stress! Dogs also can’t sniff out cancer unless it’s a specific type of cancer.

Regardless, dogs still have a powerful sense of smell, and if you’ve been wondering what your dog is smelling but aren’t sure how to ask them about it – don’t worry.

We got you covered!

Our team has created an article full of questions for any occasion, so now all you need to do is sit back.

Let us help figure out what your furry friend might be able to tell you about themselves as well as their surroundings.