Why Grant's congested {again}

We have a weekly neighborhood playgroup (just like, 5 SAHM's and their kids) and one mom brought her SICK girls. When I saw snot bubbles blowing out of the 8-month-old's nose (literally!) I should've been more vigilant about washing Grant's hands. ALL the rest of our kiddos have the same congestion/runny nose/cough now. oh, well, what can you do?

BB in a bit to catch up!