My daughter nor I can't take a bath or we will get it. When she was little she started showers. We also made sure she never wore a wet bathing suit. Of course, no great smelling bath salts or bubbles.
She is 14 now and she realizes the importance of 'airing out" and she will do this as well.
One thing we have done that has made a MAJOR difference is we each drink a small bottle of DanActive daily. It is a probiotic and the difference is amazing. I buy it by the case at Costco...24 bottles are less than $12. I buy a case for her and a case for me. This has been a miracle drink at our house.
Good luck