I made popcorn by putting a layer of olive oil at the bottom of a steel pot, putting in the kernels and cooking it on high heat for a minute or so. When it started popping, I noticed that smoke with an acrid smell started coming out of the pot in big quantities. I tried not to breathe it and made all of the popcorn pop.
I then ate all of the popcorn, and realized that the smoke might have come from the oil burning up. The popcorn had a bit of that flavor too.
I'm concerned about possible health issues arising from this. Was the popcorn I just ate poisonous? Is there a risk of developing cancer involved in eating food that has been cooked this way (I've eaten popcorn made like this a few other times, but the smoke was never this apparent)?
Should I use a different oil, or is there no safe oil for this kind of cooking?