PaulConventionWV
Member
- Joined
- Apr 26, 2011
- Messages
- 16,041
I'm pretty sure, if someone developed some benign odor and it smelled like tobacco smoke, those same people would still be "sensitive" to it.
That's because our brains are trained to recognize things as noxious when they carry the signs of something that is noxious, even if they are not. It is a protective mechanism that the brain uses, and it doesn't mean that cigarette smoke is not harmful.