I'm starting to think I do have a deviated septum. Even during the day, one nasal passage is open and the other closed. And before I realized it, after about 2-4 hours, vice versa. But never both at the same time.

A few drops of Olbas Oil on the pillow (roughly, where your nose will be) will keep the nasal passages clear and help you get a decent night's sleep.
Olbas Oil is great as an inhalant, when needed, during the day.

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