How could i improve my pubic hygiene ?

Deodorant spray won't work. You need a good deodorant cream to rub into the skin to help combat the odor. Wear cotton underwear. Cotton breathes & lets air get to the skin. Nylon, Jersey & Polyester materials do not breathe & make you perspire. Check at a Health Food Store for Shaklee Brand Cream Deodorant or Antiperspirant. It's a little pricey but works great.