Cola, we used to be fairly worried about that sort of thing, too, back in the days when DD would talk at length about the relative skills possessed by the, um--Elite-- among Medieval executioners, historical epidemics, the Hindenberg, Krakatoa, etc.
We just coached her to discuss those interests inside our home, and to self-limit such discussion elsewhere. Mostly. There was some gritting of our teeth, for sure, and a few frozen deer-in-headlights moments.
She
loved to talk radiological, chemical, and biological hazards with my work-mates, I must say.
Happily, they found it charming that she was enthralled with descriptions of being monitored for internal I-131, or regaled of tales of decontamination of tritium-soaked tennis shoes... the meaning of the terms ROI, LD-50, MSDS, and the like.
She barely remembers much of that phase now. But her lab technique is still pretty good-- she has great awareness. LOL.
