I think you need to grade the amount of soreness you have.
If you are just a little sore, only really when you flex the muscle I would train.
If my muscles hurt to the point that they are uncomfortable while doing warmup movements then I wouldnt train.
If my muscles hurt while not really doing anything, are sore to the touch I wont train.
If my chest is sore when I come to my next chest workout I would just do a recovery workout, lighter weights higher reps. The bigger issue though is that I shouldnt be sore a week later, I would really think about what my diet and rest had been like that week.