I think my grandfather used the tomatoes as an indicator of any mosaic problems, before the cash crop was damaged.
Aside from that, we had a lot of tomatoes....I miss that.
I was aware of the careful handling of the tomatoes after smoking. In fact I was just reading something about that yesterday, soemthing in the cigarette tobacco actually promotes the virus, IIRC.
I can understand your grandfather's reasoning about the tomatoes since the Tobacco was the cash crop.
I'm keeping my fingers tightly crossed that we don't have as wet a summer as we did last year - most of my tomatoes drowned, and I had 65 plants.