It is not so much the smoke (though even that cold carry the virus.......I don't know). It is simply having the fingers touch the cigarettes and transferring the mosaic virus from that tobacco to the plants.
We visited Busch Gardens probably 25 years ago and I remember the beauty of the place. I don't remember an orchid house though. I only had a handful of orchids back then and would not have been terribly interested in orchids.
