"Perhaps Lewis Carroll found a bit of inspiration in the tobacco hornworm to create the Hookah-Smoking Caterpillar. The tobacco hornworm eats tobacco leaves and its breath smells of nicotine. Its bad case of halitosis keeps predators at bay, as it advertises the animal’s toxicity."




http://newswatch.nationalgeographic.com/2013/12/30/caterpillars-bad-breath-scares-off-predators/