My Guinea Pig Smells Really Bad – What to Do

Guinea pigs are widely regarded as one of the most lovable and affectionate pets available, making them an ideal addition to any household. However, they can be difficult to adjust to, particularly when it comes to the distinctive odors they emit.

It’s no surprise that they can have a really strong and unpleasant odor that can be a shock to the system.

In this post, we’ll explore the different things that can contribute to guinea pig stench and give some advice on how to control and lower it. 

Why is my guinea pig smelling very bad?

The below might be some of the causes of the smelly guinea pig.

1.      Natural scent

Guinea pigs tend to have their own unique smells, which they use to communicate and bond with each other.

They have scent glands on their chin, near their anus, and under their feet.

These glands give off a specific smell that helps them find their way around and figure out who’s in charge. So it’s totally normal for them to have a bit of a smell, and it’s not a sign of bad hygiene.

2.      Dietary and digestive problems

If the smell gets really strong or bad, it could be because of what they eat. Guinea pigs eat mostly hay, fresh veggies, and pellets. If they don’t get enough of something or if their diet changes suddenly, it can cause digestive issues and make the cage smell..

3.      Urine and cage hygiene

Guinea pigs can have a really bad smell if their cage isn’t taken care of properly. They usually pee a lot, so if their living space isn’t cleaned regularly, it can build up ammonia in their urine. To help control odors, make sure their bedding is absorbent and changed regularly, like once a week. Cleaning the cage and getting rid of dirty litter can also help.

4.      Overgrown teeth

Guinea pigs have a lot of growth going on in their teeth, which can lead to cavities and mouth infections. It can also make their teeth droopy and make them smell bad, which is why it’s important for them to get checked out by an experienced vet.

5.      Skin infections

If you’ve got a guinea pig who’s been scratching a lot, losing their hair, or showing any signs of being uncomfortable, it’s probably time to take them to the vet. Skin infections, ticks, and fungi or bacteria can all cause itching, loss of hair, and a bad smell. Make sure you get them checked out by a vet right away to make sure they’re getting the help they need.

6.      Impact of the anal sac

Guinea pigs have tiny anal sacs that you can touch, which can be uncomfortable and have a bad smell.

Their vesicles have a special chemical in them that helps them smell each other and talk to each other.

Sometimes the bags can get stuck and make them smell bad. Veterinaries can take care of this by removing the blocked vesicles.

7.      Respiratory tract infections

If you think your guinea pig might have a cough, it’s important to get them checked out by a vet right away. 

What to do when your guinea pig is smelling

If you notice the animal smells bad, take the below steps to correct the problem to keep the animal healthy.

1.      Check for health problems

When your pet starts to smell bad, the first thing you need to do is figure out if there’s anything wrong with them.

If you notice any changes in their behavior, how they eat, or what they look like, it’s important to get them checked out by a vet who knows their stuff.

2.      Regularly clean their habitat

It’s super important to keep your cage clean so you don’t have any bad smells coming out.

Guineas are usually pretty clean, but they can build up a lot of dirt and grime in their cages. Make sure to give their bedding a good clean, get rid of any food that’s been left out, and keep the cage clean.

3.      Use the right bed

The kind of bedding you buy can make a huge difference in the quality and comfort of sleep.

Opt for something that’s easy to absorb and has good smell-reducing properties, like aspen wood chips or fleece lining.

Keep away from cedar and pine bedding, though, since they have oils in them that can be bad for your guinea pigs and make them smell bad.

It’s important to feed your guinea pigs the right amount of food, so make sure they get plenty of good quality pellets, hay and plenty of fresh veggies.

And don’t forget to give them plenty of fresh water, too. All of this can help keep your guinea pigs healthy and smell-free.

4.      Take a little bath

If you smell a strong smell, you might want to think about giving your guineas a bath. But it’s important to do it sparingly.

Guineas are sensitive and bathing them too often can strip their skin of its natural oils, which can cause skin problems.

If you have to, use damp cloths or baby wipes to clean them off. Just make sure they’re completely dry before you put them back in their cage so they don’t get too cold.

5.      Nail care and trimming

If you’re looking for a way to keep your furry friend clean and reduce odors, brushing their fur is the way to go.

Brush their fur gently to get rid of any extra hair or grime.

Trimming their nails can also help keep them from getting stuck in their feet and making them smell bad.


6.      Reduce stress

Stress can cause your guinea pigs to act differently and their bodies to react differently, which can cause them to have strange smells. Make sure your guinea pigs have a safe and calm place where there’s no loud noises, no predators, and no sudden changes.

7.      Urine burn address

Guinea pigs can sometimes get urine burns, which is when urine rubs up against their skin and makes them smell bad. To avoid this, give them some clean underwear, keep the cage clean, and look for any redness or pain around their genitals. 


If you’re having trouble with your guinea pig’s smell, it’s important to get in touch with a vet who knows their stuff.

They’ll be able to help you figure out what’s going on and make sure you’re taking the right steps to keep your guinea pig healthy and happy in your home.

That means making sure they’re hygienic, getting them enough to eat, and paying attention to their overall health. 

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