One of the following statements contains a word used incorrectly or inappropriately. Choose the option which has the incorrect or inappropriate usage of the word.

Question and options

1. Every morning, the aroma of freshly baked bread diffuses throughout the house, enticing everyone to the kitchen.
2. The stained glass diffused the light filtering through the windows.
3. Realising that the argument between the two groups of students was getting out of control, the teacher diffused the situation by quickly changing the topic.
4. He used a fan to diffuse the smoke that had accumulated in the kitchen while cooking.