You people drive me crazy, you state the obvious and half the time you are all wrong.
Also for you people there is also a white potion, but you can only get it if your sim is having allergic reactions to your pets.
I suggest that you save your game before you delete your sims or you will lose your skills and relationships that you made after you last saved.
We have more cheats and tips for this game here, The Sims cheats
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