Hi,
I would advise you not to kiss your grey,especially if you have a cold virus, have a ead through this link
http://www.greyforums.net/forums/african-grey/28325-to-kiss-or-not-to-kiss-.html
Has she shown any outward signs of being ill ?
ruffled plumage, listlessness,swelling of the eyelids, rasping, difficulty breathing, excessive saliva, dirty vent,etc..
Any change in the feces which is not apparently diet related is worth getting checked out.