sorry folks but I'm really not sure what category to put this in so I'm just hoping you will all be intrigued!
The straps (non-detachable) on my husband's rucksack are smelly with sweat (sorry) and washing said rucksack has made no difference. Neither has febreze (just makes them smell even more peculiar).
Any suggestions?
It's the bacteria in sweat that smells so try something antibacterial with boiling water. I'd also recommend a very hot wash in the washing machine if the material it's made of will stand it.
I had hoped to come back to you all with some idea of what worked best and thanks for all your wonderful suggestions. However, despite passing all of them on to the OH he hasn't done any of them!
Birthday in a few months so perhaps a new rucksack will be on the cards.