Ugh! Dude, don't!
I spent 30++ years in the wastewater industry, hell I was running a K1500 sewer machine when I was 13.
I know the smell, the sight, I handled it for decades.
I've seen this video. I walked out of a Mexican restaurant in the last two years, cause I was sure the chips were fried in gutter oil.
I'm convinced it happens here when no one is looking. Some of "them" think grease traps are a "convenience". I've inspected grease traps at restaurants. Certain restaurants always have "well maintained" grease traps.
As food gets scarce, it'll be here more.
Buy any peanut oil lately?