<s>[INST] I'm 65yo female... I used to have asthma as a child (until about 11yo).  Lately, I've been taking cruises (in my retirement) and when there is a Norovirus epidemic, the ship sprays all over with stuff that I immediately start to cough and asthma sometimes has progressed to not being able to breath. May 5th I'm on my way to a one month long cruise, and I'm terrified that this may happen again (the most that I've been in a cruise ship has been half of that....14 days. [/INST] Hi, thanks for using healthcare magic It is understandable to be afraid. You can reduce your chances of an asthmatic attack by carrying your preventer medication with you. You should consider starting it before you leave and continuing it during the course of your trip. The preventer ,if used appropriately would reduce the chances of an acute attack. You should consider speaking to your doctor, he or she may suggest increasing the dose of the preventer while you are away. Additionally you should always walk with your reliever inhalor, remember it is sometimes difficult in an acute event to take the reliever properly so you may want to have an aerochamber with you so you do not have to do the special breathing that is required when using the inhalor on its own. Consider taking a course of prednisolone with you in case you need it. I hope this helps </s>