I dumped a bathroom trash can filled with bleach down the bathtub drain and flushed it for several minutes with fresh water from the tap. Shortly thereafter, my wife bathed our children, ages 5 and 2, in the tub. Later in the day, both children were vomiting and my son has a fever. However, they are both in good spirits now and the vomiting has ceased. When asked whether his throat or stomach burn or feel irritated, he says, No. Should I be concerned, or does this sound like a stomach bugs they passed to one another?