I'd like to sum up a few things. Being quite paranoid about experiencing any slightest further damage from everyday , but not natural sounds, I'd like to ask you about your experience : Have you experienced a permanent spike from any outside noise ? ( a car horn , train horn , ambulance siren ?) Or maybe your spike appeared but was only temporary ? I'd like you to write also about the sounds that are often suspected to cause damage but haven't caused any spike when you were exposed : f.ex. : a door slammed very close to your ear or a car honked right next to you etc. Listing this can help people gain awareness about what might be harmful and what is just paranoia, cause measuring decibels on every step is not possible and we just can't know how loud what is.