Try chlorophyll. It comes in pill form (chewable, pleasant taste), capsules and liquid. The capsules are the only one I've not tried. For the pills, chew 2-4 once or twice a day. For the liquid, take a swig of it (like a tablespoon, but check your directions) then brush your teeth of the green left behind. It will deodorize your entire body (neutralize odors) and secretions and acts as a nice detoxifying agent as well.
I *must* do something in the summers else others will suffer =) Ages ago I used fenugreek capsules to help keep my breast milk. One side effect is that your skin and secretions will smell sweet, syrupy.. even your urine. It really takes more pills than I care for though, so I switched to the tea form.
Mint teas also work well.
Currently I'm on ACV - apple cider vinegar - in hopes of deodorizing (but in hopes of other curative benefits primarily).