Teflon itself is inert, but it's also not needed to avoid that food sticks in a pan. In a good prepared Steel pan food sticks less than in a Teflon pan and is way more resistant to damages. The food sticks in the pan, if you don't wait to add the food until it's heated enough, not for other reasons, mistake often don by normal users. Professional cooks never use Teflon pans.

Preparing a Steel pan non-stick

• Clean the pan after buy it
• Heat the pan on the kitchen
• Add some oil and heat somewhat more until it smoke
• After this, wait until i's cold enough and distribute and eliminate the oil film over the whole surface with an kitchen paper.
• Done

After this, to fry something, add a little oil and wait until the oil has enough heat (test with the handle of a wood spoon, if it forms little bubbles on it in the oil, the temperature is OK), to add the food. It will never stick this way.

https://www.youtube.com/watch?v=qXEt-fhyCis