There are two variables. One everybody's body chemistry is different, so some are more prone to workout or gym clothes odor than others.

But the real key is what you do after riding. Generally it takes water for the clothes to "ferment" and get funky. If you immediately air out and try your cycling clothing they probably won't get too smelly. OTOH, if you just toss them into a hamper or pile while damp don't expect them to get any sweeter smelling.

BTW- if you really want a nasty surprise, throw your clothes in the washer, and forget to pull them out to dry before starting your two week vacation. (Don't ask).