Root Rot Question

I have 2 seedlings 9 days old in the same pot, it will be nearly large enough to hold them until I sex them but say one is stinky and one is a male and I just cut the male without pulling his roots, will the roots from the dead male rot my female's roots if they are touching each other? Lol funny sounding thread. Any help will be much appreciated. -MK

i dont think they'll rot the healthy roots, just try to remove as many as the dying roots as possible to keep decaying organic matter out of the water.

adding some Hydrogen Peroxide should help keep the roots nice and healthy too