Fetid (adjective)

1. Having a strong, unpleasant smell.
2. Having an offensive odor.

Origin:

Late 16th century: from latin fetidus, from fetere "stink".

Examples:

1. The fetid smell coming from the garbage dump was overwhelming.
2. The fetid air made it hard to breathe in the room.
3. The fetid swamp was home to many different species of insects.
4. The fetid breath of the dog was caused by poor dental hygiene.
5. The fetid odor of rotting meat filled the house.