I don't care if the Queen of England told you that. I'd ask for references just the same, unless he's actually seen it done, in person, with his own eyes.A shark smells blood in open water. How is milk vapor going to get down to the worm, to stimulate it's rather primitive nervous system? Crawling through the stomach acid is not the major obstacle. The hard part is getting through the sphincters and up esophagus, fighting muscles all the way.Some worms can definitely live in stomach acid, although I'm not sure whether tapeworms can. The pH and chemistry is different further down.It really sounds mythological to me.