Welcome Duse, If you can smell the chlorine, then it is too strong to use on your plants. I have been using chlorinated tap water for all of my (5) grows and have not had any problems. My reasoning is this, first, there are fewer microbes in it, and secondly, filling my water jugs from the tap aerates the water giving it a dose of oxygen. If you are worried about the potential effects of the chlorine, just do like St.buds said, just let it sit out in an opened container, over night, and the chlorine will 'bubble' out.
Good luck with your grow