"여자에게 좋은 냄새가 나요. " : In this sentence, "여자" implies general women.
If DL wanted the answer be "The woman smells good", they should have written "그 여자에게 좋은 냄새가 나요"
The variant without the subject ending (-ga) should be admitted. Would report, but this version (Chrome on desktop today) does not offer the right option.