Diffuse (verb)

1. Spread out over a large area or among a large number of people.
2. Cause to spread out in this way.
3. Cause (light or a gas) to spread out and become less intense.
4. Pass or spread through a substance or object.

Origin:

Late 16th century: from latin diffus- "poured out", from the verb diffundere, from dis- "in various directions" + fundere "pour".

Examples:

1. The aroma of baking bread diffused through the house.
2. The information has diffused through the organization.
3. The light was diffused by the clouds.
4. The scent was diffused by the air freshener.
5. The disease has diffused throughout the population.