Can wasabi be dangerous to your health and in what way?

Depends on each body. It can be harmful or beneficial. I love it and most spicy foods, no issues here.

https://www.pushdoctor.co.uk/blog/what-does-spicy-food-do-to-your-body

I doubt it would be worse than any other type of mustard or radish.

That feeling is caused by a gaseous chemical in wasabi that quickly enters the nasal passages. It has an effect similar to smelling salts, and unlike capsaicin, the feeling goes away much more quickly. I don’t know it to be harmful, but it can be unpleasant.

I’ve seen idiots snort it. That can result in a trip to the ER. It’s probably no fun to get in your eyes either.

I love the stuff. Try Wasabi Peas. They’re usually not actually made with Wasabi, but horseradish, and other ingredients that replicate it pretty well.