I am leaving for a dive trip in Cozumel in 4 days. Everybody around me has been sick for the last month. I've been taking Zicam and inmmunity supplements for the last few weeks however today I feel that I'm starting to get a cold. Do any of you have any ideas on what I can do to prevent getting a cold or shorten the duration? I've been planning this trip for the last 4 months and hate to miss the diving (first time in cozumel). I'm guessing there are many divers out there that have been in the same situatuion so any ideas would be appreciated. Thanks