The best way to prevent your workout clothes from stinking is to rinse them out immediately after sweating into them. Since you're taking a shower already, that's easy. But what to do with those sopping wet garments?
You could hang them on your regular curtain rod if you have one, perhaps on a hanger, but then half of the drips will be onto your bathroom floor. You could try to drape your sports bra across the tub faucet; that works okay, but then you have no place to put your shorts. You could take the wet clothes to a proper drying rack or clothesline somewhere else, but we are washing clothes in the shower because we are lazy, or perhaps busy, or just smart. So all of those "solutions" are out.
Instead, just get a shower curtain rod, the kind that holds itself up so there's nothing to install. Put it inside your shower. Festoon it with double curtain hooks, but do not hang any curtains on the hooks. Instead, hang your clothes.
I slide the hooks to the end of the rod that's farthest from the shower head, and the next showerer's water doesn't disturb them. Meanwhile, the clothes drip straight into the bathtub or shower pan, and you can forget about them until the next day when you're about to take a shower and you go: "Oh! Fresh, dry clothes. Lucky me."