I got a (late) Christmas card today. I opened the envelope and the card was covered in glitter. I've read that glitter is deadly to cats, so I just opened up the envelope wide enough to take out an enclosed Christmas letter without removing the card. Somehow I got glitter all over my hands, exactly what I was trying to avoid. All of a sudden I started coughing and felt like I couldn't breathe, with my inhaler no where in sight. Finally got over it, but I wonder...can glitter cause an asthma attack? I still don't feel good and this happened hours ago.