It smells because it hasn't been emptied lately. When you put a fresh bag in it and fresh filters then put a fresh-smelling sachet of lavender or other of your choice in the new bag.
Fresh lavender can be dried and used as sachets. It can be crushed and mixed with other herbs for a sleepy time tea. It can be dried and mixed with sea salt or Epsom salt and put in a bath.
just put it in the boiling hot water init
Most salt water fish will die if placed in fresh water.
Put it in the sea.
Tropical fresh water. (Not salt water).
They die
No.
Fresh water is decreasing because factories put their waste into oceans/rivers that are closest near by and then fresh water spoils.
put lavender in powder and mix it together.
they will die
It will die. It needs salt water