I'm not a big fan of Jool, but "Scratch N' Sniff" is definitely one of the funniest things Farscape did, right up there with "Won't Get Fooled Again" and "Revenging Angel." If Farscape sometimes feels a little like a deranged drug trip gone south, well, imagine trying to explain this week's plotline to a sensible indoors type like Pilot. Priceless.
I like the little callback to this episode in "Revenging Angel", too. In "Scratch" Crichton is insisting Pilot doesn't get it because he doesn't get out much, in "Revenging Angel" the image of Pilot in his head deadpans "I don't get out much, so I read."