A maintenance guy from our apartment complex came to fix our garbage disposal tonight. 8-Bit had the oddest reaction to him, he started to growl. 8-Bit is usually my friendly kitty. He would walk up to anyone for a scratch on the head. It got to the point where I had to go in the bedroom and sit with him so he'd calm down. He's normal now, and is having a night time crazy. Should I be worried about this guy that was in my apartment?