Eat me out

Okay so my boyfriend dosnt go down on me I feel like because it might smell like pee or vaginal smells lol I mean I clean myself and all but i sweat when it's hot and idk if the humidity will make it smell? Do y'all only let him go down on u right after u shower or whenever? Arnt u afraid it will smell like pee or taste like it? What steps do u do before he gose down on u?