The answer to 'surge protection burning smell' is that a burning smell from your surge protector is a sign of a serious problem that requires immediate attention. This could indicate that the surge protector has failed and is overheating, which can be a fire hazard. The burning smell is a clear sign that the surge protector is not functioning properly and needs to be replaced.
Surge protectors are designed to divert excess voltage away from your electrical devices, but if they become overloaded or damaged, they can overheat and potentially start a fire. If you notice a burning smell coming from your surge protector, unplug it immediately and do not continue to use it. You should also check any connected devices for damage, as the surge protector's failure could have also damaged them.