Super sAliva

I'll tell you what we need. A chemical that turns saliva into a poison/virus/germ detector. If there's a dangerously poisonous substance or germ in my food or drink, then my saliva creates a strong foul taste in the mouth that forces me to spit out the food immediately. It never gets into into the stomach to be digested and cause damage.

First, the chemical must be harmless like a vaccine with no bad side-effects. If it can be made to destroy any poison inadvertently swallowed even better.

http://thinkaloo.com