I might be wrong but I’m sure he said his ocd was related to cleaning or contamination, I remember him mentioning how he didn’t like to sleep in hotels as other people had been in them and he hated the feeling of hair on the bedsheets or something. Which makes sense in my head as to why he couldn’t use the communal kitchen. I don’t really know why he was happy to smash those bottles or use the filthy minging bed runner as a disguise back in the TL days if that was the case though, especially the latter. I know my OCD is very themed around contamination but also myself and others e.g. if I had to wear the bed runner I would worry it was mouldy and I was ill and going to die because I’m a bad person (as an example).