SOLVED. Horror. Boy discovers he can leave his own body and starts using the power to spy on people/eventually gets darker and boy kills bullies with poison mushrooms and catches his dad having an affair. Spoiler. [s]

[Danny]

dies from car exhaust

[Becca]

I think that's Nightflyer by Christopher Fahy

As they chewed on the mushrooms and drank their Cokes, Jon hovered above their heads. He could almost feel sorry for them now.

Jon stood there, dizzy, dazed. The hose in the eaves poured out its poison, he coughed, he gagged, felt faint.

Google Books preview: https://www.google.co.uk/books/editio...

[Danny]

Yes!!!! THANK YOU!!!!!

[Kris]

Glad you found your book, Danny. I removed what sounds like a spoiler from the topic header and added a spoiler alert.


SPOILER...






(view spoiler)[ ... eventually gets trapped outside his body and his body dies. (hide spoiler)]