Only one of these viruses is theoretically transmissible between cats and humans — this is Chlamydia psittaci; it is not a major cause of cat flu and humans are far more likely to catch it from infected parrots as psittacosis. (petpeoplesplace.com)
People catch psittacosis from contact with infected bird droppings. (boingonline.com)
And while fatal cases of psittacosis have been reported, it's not the norm. (health.com)