 If you are seeing this message, you must pay close attention. A dangerous health hazard is in your area, and you must obey this alert to stay safe. A harmless anomaly has found its property exploited in a known manner, and outposes a serious threat to public safety. This anomaly is known as SCP-999, a amorphous mass of orange goo. This goo has unusual chemical and pharmaceutical properties, including the inducing of laughter and happiness in both that touch it, and curative properties relating to depression and other mental health conditions. The alterations to SCP-999 have made it dangerous. It has been aerosolized and transmitted by air through the region. Any who come into contact with this compound will be sent into uncontrollable laughing fits. The laughing fits are irreversible and ultimately fatal, as they will eventually cause muscle, lung, and throat damage after a few hours, preventing the afflicted subject from breathing properly. Stay in your home, wear a face mask, and stay away from any individual who is laughing uncontrollably if you encounter such an individual contact the authorities, and they will take the victim into custody. Be aware of your personal hygiene, and take steps to maintain an SCP-999-contaminant free environment by washing yourself with soapy water, and your environment with endiviral and endobacterial cleaners. Thank you for your attention and cooperation. You will be updated to any changes to the situation. Secure. Contain. Protect.