Some questions about food safety and kitchen safety are tagged with safety. Is retagging questions about food safety with the tag safety to food-safety and leaving all kitchen safety questions with the safety tag a good idea? Or should we introduce a new kitchen-safety tag and leave the safety tag for both cases? Or should we even clean up the safety tag?
Looking at the relatively small number of questions tagged with safety I would say the food safety related questions should be retagged to food-safety as the sheer number of questions already tagged with food-safety indicates there is community consensus on how those questions should be tagged.
Then I would recommend creating the tag kitchen-safety and merging the safety into it which would result in the remaining questions being tagged appropriately under kitchen-safety and aliasing safety to it as a synonym. This would prevent future tagging of questions with just the more generic safety.
I just independently rediscovered this. I renamed safety to kitchen-safety, but without creating a synonym. That'd be awkward for an ambiguous tag like this; obviously some people type "safety" thinking food safety, and others are thinking kitchen safety, so we don't want to always turn it into kitchen-safety.