Cough. Hack. Repeat.
Glug that water.
Once the temperatures around our part of the world go low enough that our forced air furnace is a regular part of the daily proceedings, we notice our reaction to the resulting lack of humidity in our breathing routine.
My dear wife Karen ordered a new dry-air humidifier this autumn on Amazon.
We fill it with distilled water and rotate the adjustable control to the right.
Placing it on the kitchen counter seems to somewhat saturate the whole downstairs. Our breathing feels a difference for the better. Knock on wood.