This has nothing to do with your storage problem, but with your cough. I had a nagging cough. At night it would get so bad, I'd choke i coughed so hard. I discussed this with my doctor. He suggested I might be dehydrated. Solution--drink more WATER. I now make sure I get 64 oz of water every day. I start when I first get out of bed. I have a stainless steel water bottle that is with me constantly, and it holds 2 cups. Four refills gives me my quota. No more, no less. Of course I have my warm drink in the morning, perhaps one in the evening, but the 4 bottles of water still get downed. I stopped the coughing. What a relief, especially at night.

I'd at least consider the possibility you need more water.

Mark