Ignore them. Intrusive thoughts are like a drunk lunatic yelling that the people who faked the moon landing are the same ones who orchestrated 9/11. You would pass it by, hear it, disagree with it, and it wouldn’t bother you. So don’t let intrusive thoughts bother you. The more you let them upset you, the worse they get. Everyone has bad thoughts. I suffer from OCD, and I am tormented by them. But trying to fight them, engage them, debate them or getting into a panic when they occur is the surest way to ensure they will continue to torment you. So ignore them like you would the ramblings you hear from a drunk lunatic yelling on the street.