[enhancer]

What type of cooking oil does that?

[lambdaba]

Seed oils mainly, a factor of the lower smoke point. The only suitable plant oils in this regard are olive and coconut oil - which are fruit oils.

[edit] seed oils r bad skeptics can just double check - the top 3 highest smoke point oils are all fruit oils, with seed oils at a distance - with the exception of peanut oil, which is closer.

The smoke point is also not the only relevant factor, the fatty acid makeup is also important, high omega-6 oils are more likely to oxidize, coconut oil for instance is high in saturated fat, olive oil is mainly monounsaturated.

[mrob]

Smoke point is a measure of when obvious quantities of particles are emitted, not their chemical composition. Extra virgin olive oil has lower smoke point than refined olive oil, but it's more chemically stable under frying conditions:

https://pubmed.ncbi.nlm.nih.gov/20678538/

However, you're correct that seed oils are generally less stable under frying conditions than other oils.

[darth_avocado]

Most seed oils have a higher smoking point, as compared to olive oil.

[Earw0rm]

Sunflower and groundnut oil is higher smoke point than olive.

[enhancer]

Damn so sesame oil or soybean oil? Those are essential is asian cuisine

[Earw0rm]

enhancer - sesame oil is more used as a dressing/seasoning AIUI rather than a frying oil.

[pertymcpert]

I don’t think that’s the cause, it’s more likely second hand smoke from Asian men who are atrocious smokers.