So, just how "hazardous" can a tank full of poo be?

Do the people who use gloves, etc. to dump their tanks also use them when they are wiping and cleaning themselves after using the bathroom?

The black tank only has in it what people chose to eat and enjoy except some tissue paper added.

The gray tank has all the contamination from all the filth that washes off of the bodies and out of the clothes and from the kitchen sink... much worse.