> The only reason I don't use it is that I occasionally cook for a friend
> who is allergic to peanuts, and I don't want to make her sick by
> accidentally using the wrong kind of oil.

I have that allergy too and it's a very dangerous, strong reaction.

A great many allergies are reactions to proteins, however, not to oils,
fats, etc.

A long time ago I established that I am not allergic to peanut oil
because it's oil from the peanut, not the protein, and saved myself lots
of needless anxiety, as well as got access really good fried things.

Allergies are very specific to persons, and I have no idea whether this
distinction applies to your friend, but if it does, it will be a big
help for her.