I think David has a point here.
The cases you two have mentioned of sensory hazards all affect people who have identifiable susceptibilities that those people usually know about in advance and that affect relatively small minorities.
Somebody might have a high confidence that they are non-depressed, non-OCD, non-epileptic, etc. Are there examples of sensory hazards that apply to people who do not have a recognized medical problem?
Are there examples of sensory hazards that apply to people who do not have a recognized medical problem?
But this is a different question. You have quietly redefined the question "are there harmful sensations to people?" - to which the answer is overwhelmingly, resoundingly, yes, there absolutely are - to 'are there harmful sensations to a newly redefined subset of people which we will immediately update if anyone produces further examples, so actually what I meant all along was "are there harmful sensations which we don't yet know about?&...
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Of course, for "every Monday", the last one should have been dated July 22-28. *cough*