After years of adult onset asthma, I feel "a lot" better since taking a tsp. of straight cider vinegar at night before bed. I hardly ever wake up wheezing anymore. Also, I have tried peroxide inhalation (50/50 mix of 3% peroxide with water in a spray bottle 2x a day.) Stings like heck at first, but I can breathe through my nose again. I also take 1500 mg, or more, of vitaman c per day. I feel great again!