"does one kill more bugs when they are in reproduction? "
I don't know the answer to that.
"does food digestion create a situation where you reabsorb toxins? "
I have mold toxicity, too, and with that the most potent treatment is cholestyramine taken 30 minutes before meals. It is a bile sequestrant. By taking it 30 minutes before a meal, it is timed to bind toxins when the bile is released so they don't keep getting recirculated. I, unfortunately, was not able to tolerate it and had to stop.
At that time, I was eating a lot and always felt better when eating. I had the feeling that food, especially when eating sufficient fat, helped to bind toxins, too, and carry them out via stool.