In reply to olddirtydoggy:
Same here, I own a pair of Forces Quest 4D non-GTX thinking the breathability of a non-membrane boot would help against smelling. If only.
The 'problem' is that Salomon uses only synthetic textiles for their boots, the leather is faux-leather and the lining is either GTX or some form of synthetic mesh. Of course, if you think leather is immoral this is great... I actually love leather because it is tough as nails. Won't buy Salomon again.
Bacteria luuuuuuuuuv synthetic textiles, hence the smell. The only thing that helps just a little bit is putting them out to dry in the sun as soon as you take them off. If there is any of course.
I'm not a great fan of ultralight hiking boots exactly because they tend to be a lot less durable than their full/mostly leather counterparts. But this of course is a personal choice.