yes its wrong to puke on someone ok so dont do it only if it's intentional, it's just unfortunate for both people otherwise.
They might if they can get sick easily
Usually, when blood comes out of your vomit, you need to see a doctor. If you are a woman, you are probably going through your period. If you are a man, ask a doctor to see what is wrong.
To help someone to vomit.
Someone would eat vomit if they suffered from a sexual fetish linked with an eating disorder. The burning and usually nauseating sensations that surround vomit could be seen as masochistic, for it does suggest a dehumanising/self-punishing aspect.
Chlamydia can't be made from vomit. It's made from its parent bacteria. Are you asking if vomit can carry chlamydia and infect someone who's cleaning it up? No.
Either missiles or vomit.
Someone would vomit from a Gastric tube feeding because getting something shoved down your body is not a good feeling in any case.
You will likely get sick & vomit it back out.
Vomit
Well they could be allergic to prawns (I am).
No they won't.
Yes, help them don't just watch