Fragrant Magician

Read manhwa Fragrant Magician / 향긋한 마법사
Emperor Carlos Afforny suffers from an awful curse that causes him to smell a foul stench from everything and everyone at all times. In a desperate attempt to break the ever-worsening curse, he summons Ersala, the apprentice of the Grand Witch, to the imperial palace. However, lacking experience, she fails to fully lift the curse leading to the stench vanishing for the emperor but only when Ersala is within his vicinity. Moreover, with Ersala being able to use magic only once a year, it seems she is tied to the emperor, almost quite literally, until she can attempt to lift the curse again.