13. Kelly Osbourne
She’s now a highly respected fashionista, but what really makes Kelly sneeze and cough? Cat urine. That explains why she has so many dogs, but it doesn’t explain how she found out she had this allergy. Did a cat pee on her pillow at some point?
The co-host (or, more precisely a panellist) of Fashion Police and star of reality shows like The Osbournes and Dancing with the Stars also suffers from food allergies, at least that’s what she wanted us to think back in 2011 when the public grew worried about her constantly being down with stomach bugs. She tweeted that it wasn’t a bug and it most certainly wasn’t a gastric band, as some had speculated, but more likely an allergic reaction to something she had been eating.
She must be allergic to something else too because she tweeted more than once (more than a bunch of times, actually) about being sick of sneezing all the time. Sneezing is the most common symptom of hay fever, among other allergies.