It is true and this is the defence a former employer took when asked them about their health and safety policy. They, a non governmental organisation with charitable status in numerous jurisdictions, basically said prove it.

I developed tinnitus from flying while, I later found out, having pneumonia and goodness knows what other issues causing issues with ear, nose and throat.

This is a personal thing has to be taken forward for the benefit of all - may seem petty when 'saving lives' this was my justification to myself. Then later I have witnessed the abdication of responsibility as marketing of 'saving lives' goes on at pace. Along with the ringing in my ears