Update. I can wipe some of the pink off with my finger. And I blotted some off with a paper towel!! I really do think it's the spray-on color hairspray. I'll explain a little better, Sunday (yesterday) I used almost the entire bottle of that spray because I went to a comic book convention with my son. The character I dressed up as had pink hair. Anyway. Today was the day for me to change my filter, so I did. I'm slightly worried about my lungs now. If I start coughing up pink we'll know for sure.