It sounds like you might have exercise-induced asthma. I do as well, and I have never heard of salt as a cure. I have been using albuterol inhalers for years, and just recently started on Advair, which seems to be helping quite a bit. I suggest a doctor visit as asthma is nothing to play around with. You'll do better cycling with proper treatment!
Good luck,
Emily
Emily
2011 Jamis Dakar XC "Toto" - Selle Italia Ldy Gel Flow
2007 Trek Pilot 5.0 WSD "Gloria" - Selle Italia Diva Gel Flow
2004 Bike Friday Petite Pocket Crusoe - Selle Italia Diva Gel Flow