A.P.
Jaimee,
I have 2 kids that have had asthma most of their lives. The only time it ever becomes a problem is when they get sick. I found that with my 4 year old (who has it worse) that a humidifier works wonders. I run it every night, even if she doesn't have a cold. It seems to help. It is just soooooo dry here! (We have been using a humidifier for at least 3 years.) It also provides her with a "white noise" that seems to help her sleep. When they are sick or congested, I get the Baby Vapor Bath and give them a bath with that. I also use the plug-in vapor strips.
Hope this helps.