It is interesting to note that in the case of the closely analogous example of snake venoms, there may be separated from a single venom a number of toxic bodies which have a selective action on different animal tissues.
Most venoms are tasteless, but cobra poison is said to be disagreeably bitter.
Yet another group, including cocaine, ergot, strychnine, and some snake venoms, causes potentially fatal seizures.
Graudins, A., et al. "Red-back spider (Latrodectus hasselti) antivenom prevents the toxicity of widow spider venoms."
Commonly, this is associated with allergies to medications, foods, and insect venoms.