More vampiric verbiage.

pto·maine /ˈtoʊmeɪn, toʊˈmeɪn/
-noun any of a class of foul-smelling nitrogenous substances produced by bacteria during putrefaction of animal or plant protein: formerly thought to be toxic.

[Origin: 1875-80; < It ptomaina < Gk ptôma corpse + It –ina -ine]

-Related forms
pto·main·ic, adjective

Source: Dictionary.com.