Electric hookups make it possible to take a breathing treatment using a portable nebulizer if needed. Planes Cabin pressure changes, stale air, and re-circulating germs, prime the pump for sinus and ear congestion upon landing. Use nasal spray and oral decongestants 30 minutes before take off and landing and drink lots of water during the flight. Keep emergency medicines in a small carry-on bag at your seat just in case your luggage winds up in a different airport than your destination. If you have food allergies, prearrange special diet requests with the airline or travel agent or bring your own food.
Some airlines use deodorizing air sprays that can irritate sensitive airways.