Odd smells

Since I'm the House Hunter I have to make sure I investgate every interesting smell in the house. If I catch a scent of something I walk back and forth and all over until I figure out what it is. The red boxes smell crazy! I've been sniffing them like crazy and they smell like a mixture of another cat, other people, and some stinky strange stuff that I can't really describe. I've walked around all of the sides, jumped on top, sniffed around the seams and the wheels, and tried to push them over. I've decided they don't pose an immediate threat to any cat or human in the house, but I'm still not sure if they may cause some other damage. I'll keep you posted! I'm off to sniff some more.