We cannot get smoke fluid in our local hobby shop. Anyone of you have try other alternative/mixture with good result?

Diesel and lamp oil will work, but not nearly as well as Super-Dri. You can order Super-Dri from Tower. I think Bill Hempel once used strawberry scented lamp oil.

Some full size pilots use, cod liver oil and central heating oil.

Do you guys mean a mix of those things, or separately?

Seperately.