If breathable waders are dirty they will seep . Try washing them with a mild detergent in the tub, make sure they are rinsed off thoroughly & a rejuvenator like ReviveX works. Ck out these sites.
How to Clean Breathable Waders | Trails.com
Washing Breathable Waders | MidCurrent
I had a pair that i had rolled up wet & forgot about in the car. The next time I went to use them there was mold on the outside, plus the smell & they leaked. I washed them & used ReviveX & got another few years out of them.