Final answer:
The Board of Aldermen and mayor held a meeting to discuss the issue of undesirable houses, including Emily's smelly house.
Step-by-step explanation:
The Board of Aldermen and mayor took action regarding Emily's smelly house. They called a mass meeting at the city hall to discuss ways to get rid of the undesirable class of houses. This indicates that they were proactive in addressing the issue, although the specific actions they took are not mentioned in the question.