I know I tell the story a lot, but spills happen on planes. Mine happened in first class with a galley leak. I don't put anything that's not color-fast near my bags - not even my indigo scarves. They leave blue marks on my neck, so what will they do to leather?I use my dust bag around the B in my Herve. But don't know if that would help the muji. Prob don't chance it !
Funny how the biggest travel issue is the plane and security. Once we are where we need to go life is so much easier!