Just having a little fun. People have been using these "containers" for years. Caterers, roadside stands, VFW halls, etc. I've never heard of a local board of health shut anybody down in my area (central MA) if they're doing it correctly.
I've seen other interesting views on park grills, the ones that are set permanently in the earth. Some people will not eat off of one of these at any time, citing they don't know what has been on it, or what anybody has "done" to it. Getting a good fire underneath one of these pretty much negates anything that could be damaging. Pre-cleaning of anything like this is a must before use. It just makes sense. The same with an oil tank. Clean it up, burn it off. Do it right.
Are you not concerned about the ill health effects of smoking food? Or the ill health effects of cooking over an open fire/flame/coals? It's well documented that all of this is not "good" for you. They say peppercorns are carcinogenic. Hasn't stopped me from grinding it on fresh.
To each I guess.
Can't say I've ever met a true Breatharian either. Yet. Still lots of time though, I don't plan to expire anytime soon.