That sounds like an interesting hack! While I couldn’t find a verified source confirming that putting a glass of salt in a car has a major benefit, there are a few possible interpretations of this idea:
Possible Meanings & Uses of Salt in a Car:
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Preventing Foggy Windows
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Some people suggest that an open container of salt can absorb excess moisture in the car, reducing foggy windows in humid or cold weather.
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Does it work? Salt is a natural desiccant (absorbs moisture), but a small amount may not make a big difference compared to commercial moisture absorbers.
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Emergency Traction Aid (Winter Hack)
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Keeping a bag of salt or sand in the trunk can help if your car gets stuck on ice.
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Better alternative? Cat litter is more commonly used for this purpose.
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Odor Absorber
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Salt can help neutralize odors. Some DIY hacks recommend mixing salt + baking soda in a bowl to freshen the air.
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Myth or Misinterpretation?
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Some viral “hacks” exaggerate salt’s effects—like claiming it repels bugs or cleans the interior (unlikely).
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Better Car Hacks to Try Instead:
✅ Baking soda + essential oils – Natural air freshener.
✅ Silica gel packs – Better for moisture control.
✅ Keep a winter emergency kit (blanket, shovel, sand/cat litter).
If you heard about this trick from a specific source, let me know—I’d love to research it further! Otherwise, I’d recommend proven car care tips over unverified salt hacks. 🚗💨