Every time I use my electric dryer & electric oven there is a strong butane smell. Does anyone no what this could be?

You did not specify if you have anything connected with butane at your place. So I assume you do not have any butane gas container there.
Maybe what you smell is something just getting warm .
It can be the electric wiring (wall outlet or single or double connector) that is getting warm and causing the smell, because both appliances use a lot of current when activated.
Feel if anything gets warm, to lead you to the culprit!
Don't forget to check the main fuse box!

Success !