A parcel arrived at an office marked 'Do Not Open.' Hours later, a colleague was found unconscious. What happened?
Category: Mystery · Difficulty: medium
Hint: Think about what could escape from a package
Answer
The package contained a gas that leaked
Explanation
The scenario indicates a hazardous substance in the package that caused the colleague to lose consciousness upon exposure.
This is a medium mystery riddle — a moderate challenge for most people. The answer is The package contained a gas that leaked.
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