They don’t add nicotine to tobacco, tobacco plants produce nicotine. That’s why people have smoked it for 100s of years.

I hadn’t heard of this, but as far as insecticides go, this sounds about as benign as possible.

I do 3D modeling and design and I am a hard #5. Can’t see a thing unless I’m dreaming. But when I think about a part or machine I’m designing I do have an awareness of it in my head, but it’s like it is related to my proprioception (the awareness of where your body parts are) instead my vision. I can imagine the surfaces of what I’m thinking about, and how those surfaces will interact as things move, but can’t see them whatsoever.

I didn’t know real visualization and aphantasia were things until I was well over a decade into this career, haha.