Shit is shit is shit..... I get a kick out of peoples 1st world knee jerk reaction to the suggestion of using humanure. Usually the first response is "no... disease". Which is true if you take into account that A) you are ingesting the plant fertilized with humanure & B) there is actual infected human fecal materiel on the part of the plant being ingested. There are many subsistence farmers in 3rd world countries who's families would starve to death if they didn't use every resource possible to grow crops. Including human waste. Trust me, living pathogens are not going to magically survive the combustion process 99% of us use to consume marijuana. Now you very well could get sick from handling your crop and then not washing your damned hands afterwards though....
Secondly, those who rattle off the "don't use carnivore/omnivore manure". Two of the most popular manures out there are Bat guano and chicken manure. Both of which are omnivorous. With the exception of strictly fruit eating bats. But most of the bat guano collected are from insectivorous bats. Worms are omnivores as well... don't seem many people throwing a shit fit over using their excrement on their plants.
All manures have the potential to harbor pathogens. The best way to deal with those is to properly compost the waste before using it to help cook out the bad stuff. Human waste is much to "hot" to use straight on a plant. You'll need to compost it to make it safe enough to use on your plants without literally burning the shit out of them.
All that said, with all the other easily accessible fertilizer options out there, I can 100% see most peoples aversion to using human waste. They just need to stick with "it grosses me out" though and quit trying to justify it past that with second hand regurgitated pseudo science. The gross out factor is reason enough.