Lidl do a laundry santister which works quite well. It’s only a couple of quid for a big bottle and can either go in the main wash or be added to the softener draw.
Things like my Rab Borealis don’t wash very well and the pits still smell even if I wash it twice. I’ve found that soaking in the sanitiser (diluted, in a bucket) and then adding more to the wash along with some non bio detergent gets rid of the smell.
I also used it to soak my boots and although they still don’t smell nice, they no longer smell like a dead badger. I’m going to give it another go with a stronger solution next time.
I’m guessing vinegar would do the same thing but I can’t stand the smell.