Answer: Option (B) is the correct answer.
Step-by-step explanation:
Gases are defined as a state of matter in which molecules are far apart from each other due to more kinetic energy.
Hence, gases diffuse at a high rate and this is visible as we feel the odor.
Whereas gas molecules move readily and easily from one place to another. So like liquids, gases also acquire the shape of a container. But this change in volume is not visible in nature.
Therefore, we can conclude that smoke usually has an unpleasant smell is a visible quality of smoke shows that it contains a lot of gas influencing the other particles.