relating to, or containing sulfur
Sulfurous things often have a strong, unpleasant smell.
Examples:
The sulfurous smell of rotten eggs filled the room.
The volcano emitted sulfurous gases.
She wrinkled her nose at the sulfurous odor.
The sulfurous fumes made everyone cough.
The sulfurous cloud rose from the ground like a ghost.
The sulfurous stench was unbearable.