FEBU Enzyme Oxygen Laundry Booster | 7-Enzymes Including DNase | Odor Eliminator & Stain Remover for Sweat, Pet & Musty Odors | Concentrated Powder, Hypoallergenic, USA-Made | Fragrance Free, 2 lbs

I know I’m not OP, but I’ve had good luck with an oxygen bleach like OxiClean. I use this product as a “stain nuke” though: https://a.co/d/07kTGGcS

ASIN B0CHN2BGR8 is genuine: https://www.amazon.com/dp/B0CHN2BGR8 It's fulfilled by Amazon, and sold by Gramercy Square Holdings LLC (doing business as "FEBU").

The bottom of the email also mentioned that for Canadians, we can order Febu off Amazon now. Huge news for those who can't handle the smell of Resolve Gold and wanted a good fragrance free booster with lipase. https://a.co/d/0aM8eEsM

It is a laundry booster with a great stack of enzymes and oxygen bleach, but without fragrance or optical brighteners. I've been pleased with its performance for de-stinking stuff! It is currently out of stock but here is a link FEBU

Absolutely the shirt, a concept we call odor rebloom. There are a couple of products you can use, all of which lead back to upping your laundry game. Would have been helpful had you listed your current protocols...but it can typically be fixed with two simple additions.... use a detergent that contains lipase...since you probably already have a detergent (without lipase), you can just boost your current detergent. Consider buying this: Amazon.com: FEBU Enzyme Oxygen Laundry Booster | 7-Enzymes Including DNase | Odor Eliminator & Stain Remover for Sweat, Pet & Musty Odors | Concentrated Powder, Hypoallergenic, USA-Made | Fragrance Free, 2 lbs : Health & Household The package does 90 loads, so adding this ingredient runs 28 cents per load. 2) There is a special antioxidant that excels on this issue. It is called: Methyl Di-T-Butyl Hydroxyhydrocinnamate (Odor Blocker). It is delivered in a scent bead called 'Unstopables' (see link). Other stink beads do NOT have this ingredient, so it MUST be an 'Unstopable' product. This has an excellent ability to attach to synthetic fibers and reduce oxidation of remaining lipids (which are contributing to odor rebloom). Here is a link....you can use any scent...just makes sure it is labeled "Unstopables'. Amazon.com: Downy Unstopables Unlimited Collection In Wash Laundry Scent Booster Beads, No. 26, Fine Fragrance, Long Lasting Fresh Scent Beads, 21.1 oz : Everything Else Obviously getting step 1 correct, makes step 2 more effective. If you add these two protocols, and wash in at least warm water, your problem should go away. Aloha.