Will I fail an EtG after 40 hours from huffing from a aerosol spray containing alcohol had a towel covering it

If you are huffing anything you have far deeper and more serious problems to contend with than failing a test.

And based on your other threads....you have a serious drug abuse problem with multiple substances.

I have to agree with Smoothy wholeheartedly and unless you get some professional help you will find something else to try, and worry about testing dirty, and going to jail, or worse. Your posts are obvious cries for help, so go get some, and stop this insane behavior.

Why are you trying so hard to kill yourself?