Fiksing av lekkasje og lukt fra vaskens rør: Trenger inspeksjon og reparasjon

Hi, there is an unpleasant smell from the pipe of hand wash basin. Something like plastic or glue. I have no idea what it is. However, my amateur inspections revealed little water leakage at the meeting point of the pipe from basin and the floor. The rubber plastic/casket was a bit loose and the glue (holding it) was loosened. I tried to cover it with silicone glue, which worked temporality, but the smell came out somewhere else. I need someone to inspect and fix the issue. Thanks.