smoke

abstract animate animated bend blur blurred changing clear complex current curve curved curves curving decoration design dimension dream effect emission enigma erratic fantasy figure flame flow fluid fluidity fume ghostly graphic gray hologram holographic holography illusion illusionary intriguing light line liquid luminous magic magical motion move movement moving mysterious mystery mystic mystical outline pattern pezzettino phantom phenomena random rounded science scientific shape sinuous smoke smooth spirit strange streak stream surreal trail transparent unidentifiable unidentified unreal unstable unusual vague water wave weird