Just cats and pollen for me. Not sure what pollen, I just know something makes me stream and sneeze in summer. Or it used to - I use a nasal spray all year round now (otherwise I'm blocked up the whole time), and it keeps the hayfever right away, thank goodness.
BTW, do you think cats know when you're allergic to them? And therefore make far more attempts to climb onto your lap than onto anyone else's?? Wouldn't put anything past cats