Great thread. Happens the world over. This happened to me on a spicy airline in curry land.
First line check ever. I use wipes to sanitize controls. Told not to do so since it would offend the previous effo.
End of that long multi sector day. Paperwork complete. Charts put away. Pack up my bag, push the seat back and step out of the flight deck. Promptly called back to the flight deck and curtly reminded that the captain leaves the flight deck before the effo.
Down the stairs into the waiting car to take us to the terminal, I sit on the left seat. Gentle knock on the window and told to step outside. Screamed at in full view of the ground staff that the captain ALWAYS sits on the LHS.