Does divination harm the fortune teller himself?

Divination is harmless to fortune tellers, but it is said to be harmful to those who interpret it for you. If the interpretation is thorough and accurate, it is an open-air machine.

Only this statement, I can't believe it. I often tell people fortune-telling, but so far I haven't encountered anything unlucky related to these things, but maybe other unlucky things I have encountered in my life are also related to these things. No one can have a little trouble in his life, so not necessarily. Maybe I haven't been allowed, so I haven't been struck by lightning, haha, I'm not sure.