My God .. Richie and I agree on something .....
The concept is simple.
1. Place boots on floor, open and ready to accept foot.
2 Left or right foot ... your choice
.... one at a time; remove foot from sneaker/Ulu/muckluck or whatever and ...
3. Place immediately in ski boot.
Note: The sock has never touched the floor!
My boots are in their sixth or seventh season and still don't smell with about 40 to 50 days per season.
My kid .... his liners should be disposed of in a "BIO-HAZARD" bag.
If you can't get a foot from a shoe to a boot without touching the floor please get a designated ..... or some kind of therapy ... or .. try ping pong ..