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The altered smell of the vaginal discharge along with the altered discharge and itching could suggest possibility of infective causes. You should consider visiting your doctor/gynecologist at the earliest for examination, vaginal swab/smear test to identify causative agent. Get started on treatment as indicated by examination findings and investigation results. If infective cause is detected, get your partner also treated simultaneously to prevent chances of re-infection. Avoid vaginal douching, use of harsh soap or perfumes in the area. Use loose cotton undergarments and avoid use of tight fitting clothes. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Drink plenty of water. Take adequate rest. Maintain healthy diet and lifestyle.
Take care.