Contagious: (Adjective) Of a disease spread from one person or organism to another by direct or indirect contact.

Jonnifer Mayinston are apparently back on full-speed, and had a romantic candlelight dinner in Hollywood last night, blah blah blah.

"They were positively glowing in the candlelight," an onlooker said of the couple, who took a corner table in the dimly lit, Hollywood landmark. "You could see her classic 'Aniston smile' on her face." (Source)

Yikes. My mom always told me if I made "Aniston smile" on my face too much it would freeze like that, but I hear they made some kind of cream for that sort of thing now. She might want to try it.