Over the years I have seen examples of people making a type of compost tea which is made by using a large barrel filled with about 70 - 80% water and then adding all sorts of stuff.
Some examples I have seen:
Note, these examples I have seen both on television and in practice.
The mixture is left to decompose until it is mostly liquid (there is no separation of ingredients and the liquid) then it is further diluted and applied to the soil.
From the results I've seen in the real world I want to start making the same stuff but I want to know what I should avoid putting in the mix; what should I not put in this tea if I want to avoid making my family sick?