10 of Your Most Burning Questions About Dogs Answered by an Expert

I sometimes get scared when people sneeze. It's a startling sound. You could try giving him a warning?

It depends on how old your dog is. If your dog is young, it could be lights and shadows. But if it's an older dog that might be having an increase in anxiety (manifested as FOMO), then this could be a symptom of cognitive decline. If this is the case, then I would talk to your vet.