Why does it smell

Hi ladies. So I work at a gymnastics center where I teach class back to back, I get pretty sweaty in class, between warming up with the kids, spotting/lifting them, and moving gym equipment. I noticed a musky smell coming from my vagina. And I hate it. I don’t have it when I’m at home or walking around town with friends- it only happened when I’m at work. How can I avoid this? Will baby powder help, or maybe bringing two pairs of leggings to work to change into? But then I’d be doing laundry all of the time lol. And skipping the warm ups and activities isn’t an option, I have to partake in all of it because my audience is ages 3-7 and they won’t do anything unless I do. It’s bitter sweet. I’m just sick of smelling. I’m waiting for the day a kid tells me I stink (cuz let’s face it, their so dang honest 😂)