Iirc, the plants are related, both are susceptible to mosaic virus, and I believe the tomatoes will show the effects first.
When we were not hoeing tobacco, we were picking tomatoes as kids, or baling hay, or something, there was no shortage of work to be done.
Very interesting - I was under the impression that being planted anywhere near other members of the nightshade family (tomatoes, peppers, eggplant and potatoes) was hazardous to the Tobacco because of the TMV.