How do u clean cat's diarrhea, I cant handle that smell not even for 5 secs, I wanna puke just by just seeing

The thing is a mess, the dustpan is smeared with the most smelly and worst looking poop I have ever seen, I will fait if I go there again without a good plan, the floor is all dirty and the dustpan too and just a centimeter of that smelly **** is enough to make all the place stink. I tryed puting cat sand over the poop but the thing is too liquid, it wont pick it up and if I fail again I will puke my intestinges and something else over that and probly die. How do you clean cat diarrhea?!