Should I Be Worried About The Inhaled Gases During A Cooking Accident?

So, basically we are showing our house constantly in oder to try and sell it and we have a george foreman. A member of my family thought it would be a good idea to store it in the oven without telling me about it. Therefor, when I went to preheat the oven without knowing this I ended up burning the plastic george foreman in up to 425 degree temperatures which warped the plastic cover of the grill and created an awful smelling odor. Which leads me to believe that some sort of gases were released as a result of burning the george foreman. So, my question is do you think gases were released, were these gases dangerous to any substantial extent if they did exist, and is it ok to use the oven I burnt the plastic in again after a self cleaning functionality is done. Also its been three days since the even and when you open up the oven you can still smell burnt plastic. Another thing, you could smell the burnt plastic upstairs but not in the basement.