...Don't like putting on smelly damp garments...
Well, this is unavoidable if you are diving dry, unless you have access to a washer/dryer or have many undergarments that you can swap out.
A drysuit is not "dry," you will get moist from condensation. And then there is the urine issue.
If you have a pee system (can't tell if you're male or female) you will get a small amount of urine in your undergarments unless you simply don't pee at all in your drysuit. If you are female, I think a small urine leak is avoidable. If you are male, there are always the rare catheter failures and the small leaks from the balanced pee valve.
If a washer/dryer is not available, you will want to have several sets of undergarments to rotate through. You can always wash your undergarments in the shower and hang them out in the wind to dry.
Don't forget spare drysuit socks, these get really wet.
Finally there is the contingency issue of a blown drysuit gasket. If you're on a live-aboard and you blow a gasket, what is your contingency plan? I was out in the Coral Sea off Australia and accidentally shoved a hanger through my neck gasket when i was trying to hang it up in the dark in heavy seas. Fortunately, the ship had wet suits/booties/fins for rent. My drysuit fin pockets were too large to be used with regular wetsuit booties, so it was nice that alternate fins were available for rent.
Personally, I just deal with the mositure and stink and rotate between two sets of undergarments.