Well it happened. My first infection. i brewed a Fat Tire clone and it was great through kegging it. I tried it after racking to keg and it tasted fine, a little sour but pretty good. After 3 weeks in the keg i tried a pint the other day. YIKES!! Talk about sour! After just a taste i tossed out the rest of the glass. I figured maybe it was still a little green and will give it a few more days before trying it again. Well this morning when I got home from work I tried it again. Well I really didnt want to see my breakfast again but I surely did. As soon as it hit my stomach, got nauseated and upchucked all over the driveway. I know yall say give it time, but to hell with that. I am pretty much sure it was bad. It smelled ok, no floaties or anything, just noxious taste.