I caught a cold, which started with night-time mouth breathing and passages so dry you could ... well, they were very dry.
On the third day, I had a very low voice in the morning, but sneezed four times and otherwise felt fine. On the fourth, I sniffed some a few times. Each of these nights, I was mouth-breathing and getting nasty dry all night. I took some echinacea and elderberry tinctures in water, but I was distracted by something else going on that day. On the fifth day, my nose turned into a faucet. I continued with the tinctures and the occasional Vitamin C tablets and used a lot of facial tissue. I made hot honey-lemon tea. Later I had just honey in water.
And then I did a thyme steam bath for my head.
I took about a cup or more of water, heated it in a small saucepan, and when it was simmering, I added about 2 teaspoons of thyme. Then I used a beach towel to make a tent so I got all the thyme steam from that pan. For about 10 minutes. I was bored. But it did feel good! Later in the day I took the thyme out of the water, heated the water again, and added that herb back in. Later in the day I did it again, but added another couple teaspoons of thyme. The sneezing has gone away. The phlegm is looser. The headache is milder. The nose-faucet has been GREATLY REDUCED.
That thyme is great stuff. Look it up. It could help you!