Questions that pertain to the action of stopping something from happening or arising. Individual questions should be judged as to whether the scope of the scenario encompasses a reasonable range of "prevention".
Information about (simple) mask wearing (concerning covid19) is a complete mystery to me. On several official places it is not recommended for a person without symptoms to wear a mask. For example:
I use noise isolating in ear headphones while working. I am considering instituting "music breaks" to reduce risks related to hearing loss.
A 10-20 minute review of websites haven't really given me ...
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