Is someone ELSE getting harmed by a guy spitting tobacco juice in a cup?
No, but that's not the point of these tyrants.
The fact that they DON'T LIKE what you're doing is reason enough.
Harm? Hardly. The most important thing is that you OBEY.
I found out from someone with similar symptoms (and better doctors--mine tried to tell me it was "my imagination" and got fired on the spot) that they'd had a developing ulcer in the small intestine just beyond the duodenum... (I wonder if tobacco juice kills heliobacter pylori?)
Anyhow, I not only feel better, I use tobacco where I darned well please, no spit cup involved.