There is a reason some people notice a different body scent as they get older—and it isn’t necessarily because someone isn’t bathing or taking care of themselves.
Research has identified age-related changes in human body odor, including a compound called 2-nonenal, which can increase as people age. But the popular phrase “old people smell” makes the subject sound much simpler than it really is. Body odor is influenced by skin chemistry, bacteria, hygiene, clothing, diet, medications, and health conditions too.
The good news is that there are practical ways to reduce unwanted odor.
Why Does “Old People Smell” Happen?
As skin changes with age, the composition of oils and other substances on its surface can change as well.
One study examining people from their 20s through their 70s found that 2-nonenal, an odor-producing compound, was associated with aging and was detected more often in older participants. Researchers linked its formation to the oxidative breakdown of certain fatty acids on the skin.
A later study also found that emissions of 2-nonenal from the skin increased with age in both men and women.
So yes, there is a scientific basis for an age-related change in body odor—but it doesn’t mean every older adult will have a noticeable smell.
It Isn’t Simply Caused by “Being Dirty”
This is one of the biggest misconceptions.
Normal body odor comes from interactions between substances produced by the body and bacteria living on the skin. Aging can change the skin’s chemistry, but that doesn’t mean an older person is unhygienic.
Body odor can also be affected by foods, medications, hormones, stress, sweating, clothing, and certain medical conditions.
That’s why simply telling an older person to “take more showers” doesn’t necessarily address the whole problem.
1. Wash the Skin Regularly
Regular bathing or showering can help reduce the amount of sweat, oils, and odor-producing bacteria present on the skin.
Pay particular attention to areas where sweat tends to accumulate, such as the underarms, groin, and skin folds. Cleveland Clinic recommends regular washing as one of the basic ways to manage body odor.
For older adults with dry or sensitive skin, however, extremely hot water and overly harsh soaps may cause irritation. A gentle cleansing routine is often more comfortable.
2. Don’t Forget the Neck and Upper Back
If you’re trying to reduce an age-related body scent, don’t focus only on the underarms.
The compounds associated with aging-related odor have been studied on the skin, including around the nape of the neck, where researchers have measured 2-nonenal emissions.
Gently washing the neck, behind the ears, upper back, and other areas that may be missed during a quick shower can therefore be part of a more thorough hygiene routine.
3. Wash Clothes, Towels, and Bedding Regularly
Odor doesn’t always remain on the skin.
Body oils and sweat can transfer to shirts, pajamas, towels, sheets, and other fabrics. If those items aren’t washed regularly, they can develop their own lingering smell.
Wearing clean clothes and regularly washing fabrics that come into close contact with the skin is a simple way to reduce unwanted odors.
4. Keep Skin Dry After Washing
Moisture can encourage the growth of bacteria and make body odor more noticeable.
After bathing, gently dry the skin rather than leaving areas damp, particularly in skin folds and other places where moisture tends to collect.
This becomes especially important for people who have difficulty moving around or who spend long periods sitting or lying down.
5. Pay Attention to Your Diet
Food can influence body odor in some people.
Cleveland Clinic notes that foods such as garlic, onions, and certain sulfur-rich foods can contribute to stronger-smelling body odor. Spicy foods, caffeine, and alcohol can also affect sweating and odor in some individuals.
That doesn’t mean older adults need to eliminate these foods automatically. Instead, noticing whether a particular food consistently makes body odor stronger can help identify personal triggers.
6. Use an Antiperspirant When Appropriate
If excessive sweating is contributing to the problem, an antiperspirant may help.
Unlike deodorant, which primarily helps control or mask odor, antiperspirants reduce the amount of sweat reaching the skin. Cleveland Clinic lists topical antiperspirants among common approaches for managing excessive sweating and body odor.
People with sensitive skin should choose products carefully and stop using anything that causes significant irritation.
7. Keep the Living Space Fresh
Sometimes what seems like body odor is actually an odor coming from the environment.
Curtains, upholstery, bedding, carpets, towels, and clothing can all hold onto smells. Regularly washing fabrics and keeping rooms ventilated can make a noticeable difference.
Fresh air and clean fabrics won’t change the body’s chemistry, but they can prevent everyday odors from accumulating around someone.
8. Don’t Ignore a Sudden Change in Smell
An age-related odor usually develops gradually. A sudden or dramatically different body odor deserves more attention.
Body odor can change because of medications, infections, diabetes, thyroid problems, liver or kidney disease, and other health conditions. Cleveland Clinic recommends contacting a healthcare professional when there is a sudden change in body odor or unusual sweating.
For example, a fruity body odor can sometimes be associated with diabetes-related ketoacidosis, while certain other unusual smells can occur with liver or kidney problems. These situations should not simply be blamed on aging.
9. Give Special Attention to Personal Hygiene If Mobility Is Limited
Getting older doesn’t automatically make someone unable to care for themselves, but arthritis, weakness, injuries, or reduced mobility can make bathing and changing clothes more difficult.
If reaching certain areas becomes challenging, a longer-handled bathing aid, shower chair, assistance from a trusted caregiver, or a simpler bathing routine may help.
The goal isn’t to make someone feel embarrassed about their body. It’s to make regular personal care easier and safer.
So, Can You Really Get Rid of “Old People Smell”?
You can often reduce unwanted age-related body odor, although completely eliminating every natural change in body scent may not be realistic.
Research suggests that compounds such as 2-nonenal can contribute to age-related odor, meaning that the phenomenon isn’t simply a matter of poor hygiene.
At the same time, regular bathing, clean clothing and bedding, good skin care, managing excessive sweating, and paying attention to dietary triggers can all help keep body odor under control.
And perhaps most importantly, an older person having a different natural scent doesn’t mean they are dirty or unhealthy. Aging changes the body in many subtle ways, and body chemistry is one of them.
If the odor is suddenly much stronger, unusual, or accompanied by other symptoms, that’s when it makes sense to talk with a healthcare professional rather than assuming it’s simply “old people smell.”
