Since the night of revelations...
Cyanide potassium does not smell like almonds.
Even in large doses, taken orally, causes death only after two and a half minutes, on average.
In the army, brom is not given.
Mendeleev did not invent vodka. There is no word about it in his dissertation. 40 degrees is the weakest solution of alcohol that burns. This is how traitors were tested for good faith two hundred years before Mendeleev's birth