"Bad" bacteria because there are also good bacteria that we need in order to live not just healthy, because every person gets sick and we need it for our body. Too much good thing is a bad thing.
Some great and helpful sopping strategies include going after you've eaten, write a list so you already know what you want.
Study's show that if you go after you eat you get more of the stuff you need then when your hungry.
I believe the answers to this is semen and saliva i think.