If one understands how the pesticide works, it's not so scary. Per WikiP:
"When insects ingest [BT] toxin crystals, the alkaline pH of their digestive tract denatures the insoluble crystals, making them soluble and thus amenable to being cut with proteases found in the insect gut, which liberate the cry toxin from the crystal. The Cry toxin is then inserted into the insect gut cell membrane, forming a pore. The pore results in cell lysis and eventual death of the insect."
Humans, and I believe all vertebrates, have acidic digestive tracts, so BT is not active and cannot hurt you.
Not to say, in some remote universe, you couldn't be allergic to it, but that's true with any new molecule introduced into your person.