Part of a personal air filtration system

Answer:

NOSE HAIR

Hint:

Not available

Explanation:

This clue plays on the idea that nose hair acts like a natural filter, trapping dust and particles before they enter your lungs. The phrase "personal air filtration system" humorously describes this biological function, making the answer a literal yet clever fit. There’s no hidden wordplay—just a straightforward nod to how nose hair helps clean the air you breathe.

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J.F.K. prediction