You know that damp morning. Coffee in one hand. Keys in the other. You open the door and the glass looks like a fishbowl. The heater is blasting. Your sleeve is doing windshield duty. And somehow the car smells like a wet dog you do not own.
That is cabin humidity. It is annoying. It can also be unsafe if you cannot see. The cheap fix a lot of drivers swear by is simple: put salt in your car and let it sit overnight.
No spray. No gadget. Just pantry salt in a bowl or a lidded tub. It will not turn your hatchback into a science lab. It will, however, soak up some of the moisture that fogs glass and feeds that stale smell.
Why a bowl of salt in your car actually works
It sounds like a myth. It is not magic. Salt is hygroscopic. That means it pulls water from the air around it.
