Dude seriously, do these things: 1) take baking soda and fill an old long sock with it and tie the end off, put it in your boots after each day, as well as removing the liners and putting them near a heat vent. 2) before you ski have a shower and wash your feet with soap and water, and a scrubbie brush or similar 3) wear fresh clean laundered ski socks before each session 4) use wool-content ski socks like Smartwool, not cotton or acrylic socks. If you do all these simple easy things I GUARANTEE the smell will go away (mostly or altogether).