I've heard the grease thing quite a few times, especially with hamburgers, but... tbh it hasn't ever happened to me. And my past two apartments haven't had a r

I've heard the grease thing quite a few times, especially with hamburgers, but... tbh it hasn't ever happened to me. And my past two apartments haven't had a range hood at all (just a microwave with a fan we never use). Is it saturated fats or something? Burgers are definitely a rarity for me, but I cook plenty. It's just generally lean meat and veg/oil/etc.