Cyanide (or is it potassium cyanide...) tastes/smells like bitter almonds. interesting plot to have someone digest it, but be genetically able to cure themselves of it with the right substances. (No, this is not entirely my idea, but it's not copyrighted as long as you don't use the same circumstances. I think.... I mean, giant wasps have got to be worse.)
One idea is that an incredibly deadly poison actually functions as an antidote for another incredibly deadly poison. (Or does that actually exist...)
A poison can work as a hallucinogen before progressing into a paralyzer that leaves the victim to be eaten by carrion cleaners and such. (I have sick dreams...)
Perhaps a poison that induces carcinogens into the host that are inoperable. Or perhaps spawns a new lifeform and uses the body as a host.
http://listverse.com/2013/04/03/10-pois ... g-effects/An idea from a post I read once (I have evil, conniving races and I like to have weird cultures): quails eat hemlock leaves because they're immune to the poison, but the meat of the bird is still deadly to humans. Interesting assassination plot...
Oleander was once used as a plant to abort children in medieval times. However, it's very poisonous and would often kill the woman as well.
Honey made from bees that fed on rhododendrons, azaleas, and/or oleanders is still very poisonous.
An intersting idea would be to introduce the victim to rabies somehow...
(Yes, I realize that most of these are only deadly, but they sure would be fun to write!! And I should probably be worried that I think that....)
Also, would it be possible to make a poison using ordinary spices? Apparently, nutmeg (in high doses) is a hallucinogenic. And I think cabbage has some cyanide in it...
But anyway. Overdosage in vitamin suplements would also make the victim sick but not necessarily dead (unless the dasage is really high, of course....)
I love researching this and find it incredibly fun. Another thing to look at is flowers. There are several flowers that normal people have in their gardens that are actually poisonous.
And don't ever make me or my brother angry. We could literally kill you without a trace. And isn't that creepy.....
Seriously. I think that all of the people who want to take over the world should just go write fiction. Same type of people and they would fit in - without all of the literal deaths and torture and such....