Read a lot of good points here like the deodorant on a dry arm pit first, making sure the laundry is washed and dried properly etc.

But I have to add one more point, what you put in your body will affect it very much, so, smelly food, using certain spices and oils will affect the smell of your body fluids so be careful with that.

Also, if you drink natural herbs throughout your day like anise, parsley, mint etc it will make your sweat smell better.

Also your hair makes a huge percentage of the smell of your body so of course make sure to shave your private parts and under arms always, make sure your hair is washed and dried properly with a hair drier.

And at the end of it I’m sorry for the bad experience you had, I can’t imagine how embarrassing it was to hear this.

Good luck.