Drake calls JADAM-style liquid fertilizer the nastier option. It breeds more pathogens than KNF fish amino acid, which does the same job without the stink. (Office Hours Ep. 53, 28:36)
The cause is the method. JADAM-style slurry ferments by putrefaction from water, plant material, and dirt. (Office Hours Ep. 122, 8:10) Cho's green grass liquid fertilizer smells bad because of anaerobic fermentation. (Cho, Recipe, p. 97)
Anaerobic does not always mean harmful. Almost all lactic acid bacteria are anaerobic species. (Cho, Theory, p. 81)
Drake's advice on the JADAM microbe solutions: they are easy and disgusting, so know what you are growing when you spray. (Office Hours Ep. 8, 8:03)
For humanure, the library gives Master Cho's method. (Office Hours Ep. 98, 40:24)
Another entry gives a wider dilution for food scraps, urine, and human waste: 50 to 500. (Office Hours Ep. 142, 52:13) The two blocks disagree, so ask Drake which to use. (Office Hours Ep. 98, 40:24) (Office Hours Ep. 142, 52:13)
The library does not say why to apply it early in plant growth. It also does not say whether anaerobes survive on the plant.