Joe, who hasn't showered in days, smells bad -- however, John, who is suffering from nasal congestion, smells so badly that Joe's odor doesn't bother him at all. (there are 0-2 errors)
This is suppose to be a perfect sentence and no corrections are necessary. Still, I don't get how you modify Joe in the first phrase (modifier being "bad") and in the second phrase, you modify "smells" with badLY. The structure of both phrases are the same:
Joe smells bad
&
John smells so badly that...
shouldn't both "bad"s' be modifying the noun Joe and John and just be an adj. "bad"?
Thanks.