It's quite common to have an odour down-there, especially during your period. Here's how these products help!
The odour from period is caused when period blood on your pad comes in contact with air. When the period blood is inside your body, there is no odour at all! Menstrual Cups and Tampons help here, as they collect and absorb the blood, respectively, when they are inside your body.
An intimate hygiene wash, especially one that is chemical free, helps relieve your intimate areas of bacteria and pathogens, especially during your period. This controls the odour too!