Aha Trivia Stuff Everyone Should Know
Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-scuba-diving-a3f0d53e08f8

What is a simple way to stop a mask from fogging?

Spit in it and rinse.

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  1. Fill it with sand
  2. Store it in sunlight
  3. Spit in it and rinse ✔

Why: Saliva spread on the glass and rinsed leaves a film that stops droplets forming, reducing fog.

Huh, didn't know that: Saliva spread on the glass and rinsed leaves a film that stops droplets forming, reducing fog.

The dad joke
A little spit goes a long way.
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References

Answer: Spit in it and rinse. Saliva spread on the glass and rinsed leaves a film that stops droplets forming, reducing fog.

  1. Scuba diving en.wikipedia.org/wiki/Scuba_diving
    many divers spit into the dry mask before use
    Checked 2026-11-07.

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