Refers to dubious or unverified information, often with a sensational or mysterious tone. The 怪 (kai) element suggests something strange or suspicious.
Dubious rumors are spreading online.
He always talks about nothing but gossip.
デマ refers to false rumors or disinformation spread deliberately, whereas 怪情報 may simply be unverified or odd.
Compound of 怪 (kai, 'suspicious, strange') and 情報 (jōhō, 'information'). The exact origin is uncertain, but it likely emerged in modern Japanese to describe dubious or sensational reports.