+1 on checking several times before deciding. Bees will get all defensive for all kinds of reasons. Though they are amazing animals, let's face it, they have just enough brain tissue to reason not to sting.
I have a hive of regular Italians, they don't mind me sticking my nose into their business mostly. I open to look through and they get flustered after a while, then seem confused what to do about me. I made a split and mis-guessed which nuc was the one that was queenless. I was walking by yesterday, one followed me 50 feet away and stung me on the nose. Today I went into the barn and without warning got stung on the wrist when I stepped out again. I opened it up and there are about 10 emergency cells, at least one with a larvae.
In contrast, I have a colony that last year was a real horror. I finally took the whole hive out in the trees where they wouldn't get sight of me. They were the kind that I could just sit next to if I were real quiet. While moving that hive the bottom board dropped off and I got stung 6 times. I would inspect and my jacket pocket would have bees in it. I had two sting me under cover, I couldn't walk across the barnyard without somebody getting up in my face. I had one follow me 400 feet into the trees before she gave up. I guess they swarmed and requeened, I was in there yesterday to see about giving them space and never so much as got a head bump.