After Bangkok rejected what it called the "baseless accusation" it had used chemical weapons over Cambodia during the Southeast Asian neighbours' bloodiest military clashes in decades, a months-old photo resurfaced in posts falsely claiming it showed the Thai air force using a "poisonous smoke weapon".

At least 12 have been killed in violent tensions along the disputed border separating Thailand and Cambodia. This follows a flare-up in May in which troops exchanged fire.