The word dukhota is everyday Russian for the stuffy, stale air you get in a closed, overheated room, and the clip has circulated as a short TikTok reaction sound rather than a line from a known film or show. Russian speaking creators began dropping it over clips of packed transport, small flats and summer heat, where the single word worked as a complete caption. It spread because the feeling is universal, so even viewers who do not speak Russian understand the complaint from the tone and context alone.