Read the following context and choose the best option to answer the question.
Context: She lay down on the couch next to him and fell asleep . * Spike sat on the arm of the couch , his long black coat wrapped around him , smoking . Buffy sat up . " William 's gon na kill you for smoking in his apartment . " Spike shrugged .
Question: Why would William be upset ?
Options: 
- They do n't like the fragrance of Buffy .
 - They do n't like the couch .
 - They do n't like the smell .
 - They do n't like Buffy .


They do n't like the smell .