Since superfluids consists of integer spin bosons or effective bosonic Cooper-paired fermions, Pauli Exclusion Principle does not apply to them. They can thus occupy the same quantum state as any other normal baryonic matter, effectively going through them if electromagnetic repulsion between them is low enough to not oppose its motion.
Basically, if a superfluid and a slab of cold baryonic matter meets, will the superfluid go through the baryonic matter unaffected with little interaction? (Assuming it has enough velocity to overcome the electromagnetic repulsion i.e. $KE \space> EPE$)
For example He-4 is bosonic as it has an integer spin 0, if we cool it down to superfluid temperature and put it in a container made of baryonic matter (i.e. glass/silicon dioxide) it will pass through the container? (Since it can occupy same quantum states as the particles in the container.)
Rather creepy theory, don't you think?
P.S. : Quantum state includes spatial coordinates of the wave function of the particle and spin and other things, so Pauli Exclusion forbids fermions to occupy the same space unless their spin is opposite. This does not apply to spin 0 particles (bosons) so they can all occupy the same space if there was no repulsion between them. So spin 0 particles can pass freely through fermions and other particles if the EM repulsion between them is overcome either due to it being weak or the condensates having high velocity?