Not OP, but combustion byproducts/impurities mostly. Get a air quality sensor and watch it go mad when you start cooking.
The one real downside to induction is actually its speed. You can really easily burn your food very quickly if your not careful. IKEA sell an induction hot plate for $40AUD, well worth giving it a try.
The 3rd gen iPod shuffles used the headphone port for USB, definitely uncommon though.