BtPMaT1, maybe bacteria thurengensis, a naturally-occurring microbe commonly-used by organic gardening and for mosquito control? Mosaic virus will cross from tobacco to tomato, potato, other plants (those three, plus peppers, ground cherries, tomatillo, chinese lanterns, petunias, oleander, poinsettia, datura, jerusalem cherry, love apple, eggplant, are all relatives). Planting solanum nigrum (deadly nightshade) in the potato garden is an effective means of controlling the potato beetle, because the smell that attracts the beetle is stronger in the nightshade, they land, they munch, their nervous system shuts down, then then tumble off, dead. If they adapt to not follow the scent, they go extinct. Heh heh...
I think Al Capone put it best. I hate Bad Bugs in my garden as much as he hates Elliot Ness!
“I want this guy dead! I want his family dead! I want his house burned to the ground! I want to go there in the middle of the night and p*ss on his ashes!” ;)