https://www.sciencedaily.com/releases/2005/03/050329130902.htm
The study of 16 young men who were habitual spit tobacco users measured their responses 30 minutes after dipping snuff. These readings were compared with...
short term effectsspit tobaccosuggestlonghealth
https://www.nationalgeographic.com/science/article/tobacco-leaves-emit-warning-chemicals-that-summon-predators-when-mixed-with-caterpillar-spit
When hornworm caterpillars eat tobacco plants, they doom themselves with their own spit. As they chew away, a chemical in their saliva reacts with airborne...
tobacco leavesemitwarningchemicalssummon