After 8 years without it, I do.
The recent cold weather triggered an attack while I was (ahem) running one night last week. I knew what it was and was pretty angry that the attack slowed me down. In truth, the pain in my chest was so bad it stopped me in my tracks. Crap-tastic.
Now I have a Flo-vent inhaler to use 2x/day, a "rescue" inhaler (

one more thing to carry on the bike), and a spirometer to use & chart my progress. So far I have the lung capacity of a 48" tall kid.

Frack!
The other day when I left the house to ride it was 31*. I wore my balaclava and since I didn't have an attack over the course of a 50-mile ride I guess it helped. But when I went out to run the other night I had to use the rescue inhaler twice, and I still couldn't finish the run.

The lesson here is probably to stop running...yet who here with EIA stops cycling because of it?
I'm still researching it, and am grateful for tips, insights, anecdotes you care to share.