Why would my inner labia be itching and vagina has odor?

Infection: You could have a vaginal infection, and need an exam with your doctor to be sure. S/he can also treat whatever is seen so that you'll have relief from your symptoms. If you have no doctor and are very uncomfortable over the weekend, you can go to an urgent care center for help.

STD. maybe.: If these are new symptoms, i'd be concerned that you have a sexually transmitted disease. However, the itching could be from a yeast infection (not necessarily an std) but that doesn't usually cause odor. You could also have bacterial vaginitis (commonly called "bv"), which is also not necessarily an std. To treat it right, you need to see a doctor. But, very likely easy to treat, don't worry.

Vaginosis: The most common symptom of BV is an abnormal homogeneous off-white vaginal discharge (especially after vaginal intercourse) that may be accompanied by an unpleasant (usually fishy) smell.[6] this malodorous discharge coats the walls of the vagina, and is usually without significant irritation, pain, or erythema (redness), although mild itching can sometimes occur.