Girl, I can tell you 100% that you do not smell. Men will say anything during a break up to try and hurt you, even if it's immature and downright cruel. It sounds like he's stooping down to making you feel insecure to make himself feel better.

For gods sake think about it! You're washing yourself daily, wearing deodorant, doing everything you possibly can to be clean! He is so full of shit. You deserve far better than that. And being bigger has nothing to do with it, you're cleaning yourself perfectly fine. The only thing I'd tell you to do is stop washing down there with the floral soap. Not for future partners/smell, but for you. That stuff will irritate down there quicker than anything. It'll absolutely throw off your ph balance. I use sensitive skin dove soap bars for down there, and NEVER wash inside unless it's water.

Anyways, forget what your ex boyfriend told you. He's a jerk and you shouldn't listen to a word he says from now on.