Open windows and doors to help air out your kitchen.
Fill a shallow roasting pan with a mixture of one part vinegar to six parts water.
Place the roasting pan in your oven and turn the oven on high. The vinegar will help neutralize the odor of the oven cleaner and will help lift off any remaining food residue.
Leave the oven on for 30 minutes, and allow it to cool down.
Remove the pan from the oven and wipe down the inside of the oven with a damp rag. This will remove any excess oven cleaner and baked-on food.
Always use green cleaners they are non-toxic.
There isn't much you can do about that...light some scented candles or incense and wait for it to fade.