Omie
Hi Civ,
How terrible for you to be stuck in a cold climate with your condition. I have a couple of suggestions you might try.
When I start coming down with a cold, I use a mini bathroom heater set on a table by my chair and let the warm air blow past my face. This gives me warm, dry, air to breath and I feel better.
Using a vaporizer, put in distilled water with a half a cup of h2o2 ( 3% hydrogen peroxide like you get at wal-mart) and make a tent with a towel and breath in the warm moist air. I've read posts where people say doing this over a short period of time cured their asthma.
Oh, and when going outside, it may look silly, but one of those painter's masks will block the frigid air from getting into your lungs. You will breathe warmer air.
Hope some of this will help your problem. Omie