Re: Breastfeeding while she has a cough.
Also, and this isn't really the point of your post, but there isn't really any reason to avoid dairy if your sick. It's sort of an old wives tale that dairy thickens mucous, etc. So I hate to pile on, but your DH is starting from a point of false knowledge and then applying that falsehood inappropriately.
DS Ethan 12/16/2008
Breast fed/pumped 11 months as a surgical resident, 80 hours a week at work
DS Abram Daniel 12/20/2012
Feel like we've gotten a strong start