You open a new ChapStick.
You need to urinate.
While urinating, you decide to apply some ChapStick and accidentally drop its cap in the toilet bowl.
Q: Do you extract the cap and clean it for re-use or buy another ChapStick?
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Is this a "Heavy Rain" scenario?
A: I kill myself because only nancy-boys use ChapStick.
Urine's sterile. I'm game.
You're descended from survivors. Clean and reuse it. Alternatively, clean it and let someone borrow it.