The movement of the pot (handle) was slow, and when I attached the LS bell hammer, the movement improved, but I was worried about the smell of oil.

If you wash off the LS bell hammer when the handle moves better, you will not be bothered by the smell of oils and fats and the spread of fire due to fire, and the handle will move lightly and smoothly for a while.
(Also, if you get stuck, repeat the same thing regularly to increase durability and make it even better.)