Which parts of my vagina do shave ? Is it also true that if you don't shave your vagina and when you have your period you would stink?

Shaving your vagina has nothing to do with odor during your period. If you shower daily, are hygienic, then you shouldn't "stink" during your period, hair or no hair.

What parts you shave is up to you.

It's true that it shouldn't smell worse whether you have pubic hair or not, some people prefer to whip it off as it feels more comfortable. Just be careful, it's not an area to want a shaving cut, that's for sure.

No, shaving has nothing to do with stink. Not taking a bath, or washing "private" parts is what it's all about.

1. Smell can be from old blood or urine clinging to pubic hair. It can also be from various common conditions such as yeast infection and trich.
2. There is a wide variety in the amount of hair women have. Speaking just for myself, I used to use scissors on the hair just along the edges of my labia, mainly because I pee a lot. I suppose it left me with sort of a whiffle cut, but didn't care.