Go into a crowded store and start coughing really loud.
Get one of those theatrical packets they use for fake blood pouring out of your mouth and go into a store and start coughing and then ask somebody if I'm coughing up blood.
Print up some official Department of Health Quarantine notices and put them on people's doors.
Print up some official CONTAMINATED: USE AT YOUR OWN RISK stickers and put them on pork products at the grocery store.
Put a barricade outside the local casino CLOSED AIR DUCT VIRUS CONTAMINATION. DO NOT ENTER CASINO. EXTREME VIRUS DANGER.
Maybe I have too much time on my hands.