If the idea of getting bitten is making you nervous, then wear a pair of light gardening gloves. The teeth will penetrate them but it will take most of the sting out of the bite.
There are a couple of things at play here. First young womas are notorious for being bitey. Unfortunately, masking your scent by washing your hands or sanitizing them isn't going to do much (unless you naturally smell like a rodent).
The second is that with bitey snakes, thought has to be put into your handling sessions. Handle them about 48 to 72 hours after feeding. When handling them, make sure to read your snake. They gave off predictable behavior cues before a handling bite. Pay attention to those cues and learn to prevent a bite.
Also pay attention to the tail of your young woma. Caudal luring is not uncommon in these animals and any such behavior prior to handling should be avoided.