Usage patterns
〈物〉が香気を放つfor something to give off a fragrance
The white plum blossoms are quietly giving off their fragrance.
香気が漂うfor a fragrance to drift or waft through the air
The fragrance of sandalwood was drifting through the room.
香気に包まれるto be enveloped in a fragrance
The tea room was enveloped in a quiet fragrance.