They let off noxious fumes, they require lots of care such as showers, brushing their teeth, etc. You would not eat your excretions. They smell bad without
All living things sweat pee poop sneeze bleed vomit etc. All living things are gross.
Depends, we are pigs and are invasive species. LOLZ
Humans are a walking factory of disease and imperfection.
Some of them (Neil Patrick Harris) are actually quite attractive.
Think about what "disgust" is for. It cues us in to things in the environment that may be unhealthy for us. So maybe humans can be disgusting in a subjective emotional sense. And in an objective instrumentalist sense they can be if they are dirty and covered in mud or gunk. But it doesn't make sense to consider humans to be generally disgusting because the faculty of being able to recognize disgust exists in order to serve humans.
we animals are not disgusting