Odorous gets used twice in this passage, an odd word choice as it has a traditionally negative connotation, but its being used in the context of something pleasurable (in this case the sleep that this lady is potentially awaking from in response to his dream about her, and secondly to describe her nakedness). Once again, we have a simple answer: Joyce found gross smells fascinating and arousing (see the video posted in the “homage” annotation), so Steven does as well. There's likely a fair bit of truth to that idea, however we can also read it in a similar fashion to the fire imagery. Steven once spent a lot of time attempting to “mortify his senses” by smelling things one would generally avoid smelling, a practice seemingly designed as a from of religious self-flagellation. As with his talk of fire, an image that once terrified Steven within a religious context, he now idealizes and actively lusts after scents that he once engaged with masochistically. Masochism appears to be a major part of Steven's character, perhaps one that evolved from his Catholicism, and so we see once again that while Steven has managed to recontextualize words and take control of the things that once served as a sort of punishment for him, they've still molded him into the person he is now, in ways he likely doesn't realize.