Food oils? But those oils are meant to clean and hydrate wood furniture, this is what I use:
And the luthier uses avocado oil that is meant to clean furniture as well. Most times those products you buy at guitar stores to clean the fretboard are basically this stuff as well.
Fretboard cleaner is either naptha or mineral oil. Sometimes scented. Its not avocado oil or anything else.
Also furniture is finished and treated. Its not the same as a guitar neck most of the time.
If you want to chuck avocado oil on your guitar. Go for it. Im just telling you what I know. If you feel different. Fine.