Is undiluted Milton dangerous?

My cat had a little accident on the sofa and everything I tried would not get rid of the smell. So, in my wisdom (!), I decided to pour some undiluted Milton fluid on the area then gave it a rinse with a jug full of water. However, now I'm slightly worried that I may have created chlorine gas or something! I'm not worried about staining the sofa but I'm slightly concerned that I may poison me and the cats! I poured less than a capful of the milton onto the sofa and rinsed it with at least 2 litres of water. I can't smell bleach but my eyes are stiging a bit (could be paranoia though!). Please help put my mind at rest!