MIneral oil (aka baby oil) is better than olive oil.
Mineral oil1
Mineral oil is any of various colorless, odorless, light mixtures of higher alkanes from a mineral source, particularly a distillate of petroleum, as distinct from usually edible vegetable oils. The name 'mineral oil' by itself is imprecise, having been used for many specific oils over the past few centuries. Other names, similarly imprecise, include 'white oil', 'paraffin oil', 'liquid paraffin' (a highly refined medical grade), paraffinum liquidum (Latin), and 'liquid petroleum'. Most often...
“Something used on babies couldn’t possibly be carcinogenic?!” Consider Johnson & Johnson and all the talcum powder suits …
The Wikipedia article on Vaseline, a brand, says that it’s highly refined, triple-purified, and generally regarded as safe (but less rigorously prepared competitor brands might not be Petroleum Jelly May Not Be As Harmless As You Think | HuffPost Life1)) and materials regarded as carcinogenic are removed in the purification of Vaseline from its petroleum base. Since it’s all Wikipedia or HuffPost, it’s hardly peer-reviewed scientific information, though. (and from the editorial comment at the end, there apparently was some pressure to update the HuffPost article to specifically mention that the Vaseline brand is generally regarded as safe - not in the original article).