Help! My wool sweater smells – and what you can do about it
Originally published in August 2023 – updated in September 2025
I have a complaint!
Because you claim that wool doesn’t smell… and my wool does indeed smell.
Fortunately, we don't get this comment every day, but once in a while, such a surprised (or irritated) email comes in. And let's be honest: it’s a logical question. Because we have indeed been claiming for years that you barely need to wash wool, and that it stays fresh by itself. And that is true – but there are exceptions. In this blog, I explain when wool can still start to smell and what you can do about it.
1. Wool sometimes just smells… like sheep
Wool doesn’t have a flowery scent. Especially when it’s wet, it often just smells like sheep. Not chemical, not artificial – but natural. If you wash wool with a natural detergent containing lanolin (as we advise), it usually doesn’t smell like anything. You can optionally add a few drops of essential oil for some extra fragrance. But as soon as your wool is dry again, that sheep smell usually disappears like snow in the sun.
2. Your washing machine is a jerk
Sorry, but it’s true. Many people wash at low temperatures (good job!), but forget to clean their machine regularly. Bacteria, "laundry sludge," and soap residue accumulate in the rubber seals and the drain. The result? A foul odor in your clothes – including your wool. Clean your machine every 4 weeks: 95 degrees, half a bottle of white vinegar, some baking soda or a dishwasher tablet, and go. Your woolens (and all your laundry) will be grateful.
3. Your deodorant is the culprit
Many natural deodorants are based on oil or butter, and those fats soak into the wool. You shouldn’t wash wool with hot water or treat it with degreasing agents, so you can barely get it out. Result? A greasy armpit area where bacteria have a party – and thus: odor. Better to use a deodorant like NUUD, which isn’t greasy but is effective. Or wash your armpits well before putting on your woolen.
4. It’s actually a bit about you (and that’s okay)
Some people naturally have a stronger body odor or sweat more, especially during hormonal changes or with certain diets. No shame in that, but it means you might need to wash your wool slightly more often than average. My teenager suddenly started having teen sweat – and yes, then his wool sweaters went into the wash more often than mine. If you use the right detergent, they can handle that just fine.
5. Bonus: wool doesn't shrink due to heat
Wool shrinks due to temperature fluctuations, not due to heat in itself. So you can even boil wool – as long as you do it carefully. Cold water in a pan, wool in, bring to a boil slowly, don’t stir, let it cool down in the pan. This way you can even remove nasty bacteria (or fungal nail infections) from your socks. Only do it if you dare!
Nothing works? Then wool might not be for you
That can happen. But in 99% of cases, odor in wool can be solved with the tips above. Try it out, see what works for you, and know: you are definitely not the only one dealing with this.
Frequently asked questions about smelly wool
Why does my wool sweater smell?
This can be caused by laundry sludge in your washing machine, greasy deodorant, or simply because your sweater isn't getting enough ventilation.
Can I really boil my wool?
Yes, if you heat it up slowly and let it cool down again. Never pour boiling water on it suddenly!
What is a good detergent for wool?
One with lanolin. Without aggressive fragrances or chemicals. And always check if it is suitable for wool. We recommend our LANALICIOUS detergent
How often should I clean my washing machine?
At least once a month. Use white vinegar, baking soda, or a special cleaning program at 90–95 degrees.
Which deodorant do you recommend?
We use NUUD ourselves – not greasy, no junk, and super effective.
Do you have a golden tip?
Let us know! We love supplementing this blog with your experiences. And if you found this blog useful – write a review about us! It makes us happy!
Love, Vera
