Got completely wrecked last night and passed out about midnight turbo blazed. I have these like 30cm incense sticks and my mate was like "forget yeah lets light em up" and lit 2 in my room before we passed out, woke up at like 3am still blazed with his phone beeping with a smoke alarm and the entire room was full of smoke like we're dying.
So yeah turned out his phone has a smoke alarm in it, that's pretty neat.