Susan,

I don't have any information on your particular question, but can share my
own experience.  Keeping in mind that stress and fatigue can trigger asthma
attacks, I used to wheeze while breastfeeding, but only in the evening when
I was tired.  During the night, and earlier in the day it was no problem.
We never did figure out any other trigger than fatigue.

Margaret K.K. Radcliffe               [log in to unmask]
Dept. of Mining & Minerals Engr.
Virginia Tech, Blacksburg, VA