Eucalyptus oil warmed can help loosen up the sinuses and any congestion in the lungs. Stay away from milk products, as this tends to leave a film in the back of the throat; mucus. If you live in a dry place, or run air conditioners, you can set a big pot of water on the stove and heat it to steam, like a warm humidifier. Breathe in the steam, as it seems to soothe. You can add a couple drops eucalyptus oil to further the therapy. No smoking1 And no incense burning. Find very light fragrances, if you must, in an oil warmer. Even the smell of dish soap and laundry detergent can affect your lungs and sinuses. I can't walk down that aisle in a store. Everything I get is unscented. Keep the dust down. Even distilled water in a spray bottle with a fine mist helps. I spray around my place often, as I live in desert, and there is always dust in the air. But humid all the time makes the air thicker, so for some its hard to breathe; makes the air "heavy", or "thick". Try to find a balance that works for you. A fan on low will keep the air moving, making it easier to breathe. I have one little fan on each side of my bed for this purpose.
Hope this helps. Blessed Be...