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I have a Mammut jacket that's made with their DRYtech 2-layer material. It's been used quite a bit but still appears to have a lot of life left in it. However it's acquired a weird smell, not unlike fried onions, potentially from being in a generally damp / humid house and close to my kitchen.

I've washed it in line with the care instructions and this helped a little but not enough. I'm reluctant to start experimenting as I don't want to ruin the material's waterproofing. I've considered leaving it in my car for a few days next time we get -20C weather but I'm not sure how much this will help.

How can I safely eliminate odours from favourite jacket?

Edit: I have also sent a question to Mammut and will post any answer they provide.

  • I would try the -20C first. – paparazzo Jan 16 '17 at 22:47
  • The -20°C trick I believe you will find disappointing. Cold weather does not help my jackets in the least. – Ken Graham Jan 17 '17 at 3:23
  • Not that it will fix the odor but there is liquid detergent for that family of fiber. – paparazzo Jan 17 '17 at 13:48
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I recommend you try Gear Aid MiraZyme. It is formulated specifically to remove odors and it is safe for your waterproofing. It does not require you to wash your garmet harshly; instead you dip your garment in a dilute solution and leave it to air dry.

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  • I just got a reply from Mammut that recommended an enzyme cleaner, specifically Nature's Miracle – tomfumb Jan 17 '17 at 19:17
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    it was effective, though not quite 100%. I think I used quite a dilute solution and next time will try more. I used more on my fleece jacket which had a similar odour and it worked very well. For me the most important thing was the Mammut recommendation so now I'm not paranoid about wrecking the jacket this way. – tomfumb Jan 24 '17 at 17:12
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Before getting into the main body of my answer, it should be noted that according to the company's guidelines a water-repellent product (DWR) should be reapplied "about every 5th washing cycle."

Refreshing the Durable Water Repellency (DWR)

The DWR of water-repellent products can be re-energized after washing by giving them a heat treatment.

To this end, tumble-dry your product for approx. 5 minutes or iron it carefully. When ironing a product, lay a cloth between the iron and the garment.

With this refreshment of the DWR, it is sufficient to re-impregnate your product only about every 5th washing cycle.

Here are some tips that might be of help to you in getting rid of those unpleasant smells in outdoor clothes.

"Odor in workout clothing is most commonly caused by a buildup of sweat and bacteria from your body."

"How you store your workout clothes can also lead to additional odors—for example, leaving sweaty clothes in a closed up gym bag, locker, or hamper."

Some general tips:

  • Turn clothes inside out before washing (since the sweat, oils, and bacteria from your body accumulate on the inside of the clothes). (Mammut recommends this step also)

  • "Always use the sniff test before putting the garment into the dryer," Zeitler says. (You don't want to "cook" the smells in.) Mammut recommends "tumble-dry your product for approx. 5 minutes or iron it carefully."

  • Wash clothes as soon as possible after wearing.

  • If possible, let sweaty clothes air out immediately rather than stuffing them into a plastic bag or hamper.

  • Don't use more detergent than recommended or overstuff the machine, both of which make it harder for clothes to rinse clean. (In my tests, every single method did worse if I crammed too many items into one load.) - The Absolute Best Way to Get the Stink Out of Workout Clothes

What does Mammut washing instructions tell us:

Washing

  • Always read the care label before washing your clothes!

  • Close all zips and velcro fasteners and then turn the garment inside out.

  • Wash with liquid detergent and rinse thoroughly.(Do not use washing powder since this blocks the pores of the membrane).

  • Leave the garment to dry completely.

All said and done Mummut says you should not washing powders or fabric softeners. It seems to me you could try this product: Nathan Sport-Wash.

Nathan Sport-Wash

Before using any new product on clothes please read the particular labels to see if the ingredients of this detergent are safe to use. If in doubt, one could email the manufacturer at Mammut.

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